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Finding the Fourth Proportional to 79,680,028.90, 119,520,043.35 and 79,680,028.90

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Solution

The fourth proportional to 79,680,028.90, 119,520,043.35 and 79,680,028.90 is: 119,520,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,680,028.90 : 119,520,043.35 = 79,680,028.90 : x
  2. Step 2: Convert to fraction form
    79,680,028.90/119,520,043.35 = 79,680,028.90/x
  3. Step 3: Cross multiply
    79,680,028.90x = 119,520,043.35 × 79,680,028.90
  4. Step 4: Simplify right side
    79,680,028.90x = 9,523,360,508,257,254
  5. Step 5: Solve for x
    x = 9,523,360,508,257,254/79,680,028.90
  6. Step 6: Final answer
    x = 119,520,043.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.