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Finding the Fourth Proportional to 157,898.09, 217,892.94 and 86,280.59

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Solution

The fourth proportional to 157,898.09, 217,892.94 and 86,280.59 is: 119,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,898.09 : 217,892.94 = 86,280.59 : x
  2. Step 2: Convert to fraction form
    157,898.09/217,892.94 = 86,280.59/x
  3. Step 3: Cross multiply
    157,898.09x = 217,892.94 × 86,280.59
  4. Step 4: Simplify right side
    157,898.09x = 18,799,931,420.03
  5. Step 5: Solve for x
    x = 18,799,931,420.03/157,898.09
  6. Step 6: Final answer
    x = 119,063.70

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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.