Home / 129,503,009,074.38-178,702,159,263.89-71,630,143,311.23

Finding the Fourth Proportional to 129,503,009,074.38, 178,702,159,263.89 and 71,630,143,311.23

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Solution

The fourth proportional to 129,503,009,074.38, 178,702,159,263.89 and 71,630,143,311.23 is: 98,842,964,110.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,503,009,074.38 : 178,702,159,263.89 = 71,630,143,311.23 : x
  2. Step 2: Convert to fraction form
    129,503,009,074.38/178,702,159,263.89 = 71,630,143,311.23/x
  3. Step 3: Cross multiply
    129,503,009,074.38x = 178,702,159,263.89 × 71,630,143,311.23
  4. Step 4: Simplify right side
    129,503,009,074.38x = 12,800,461,278,097,797,283,840
  5. Step 5: Solve for x
    x = 12,800,461,278,097,797,283,840/129,503,009,074.38
  6. Step 6: Final answer
    x = 98,842,964,110.17

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.