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Finding the Fourth Proportional to 153,597.30, 211,965.22 and 85,618.59

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Solution

The fourth proportional to 153,597.30, 211,965.22 and 85,618.59 is: 118,154.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,597.30 : 211,965.22 = 85,618.59 : x
  2. Step 2: Convert to fraction form
    153,597.30/211,965.22 = 85,618.59/x
  3. Step 3: Cross multiply
    153,597.30x = 211,965.22 × 85,618.59
  4. Step 4: Simplify right side
    153,597.30x = 18,148,162,577.59
  5. Step 5: Solve for x
    x = 18,148,162,577.59/153,597.30
  6. Step 6: Final answer
    x = 118,154.18

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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.