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Finding the Fourth Proportional to 157,140.92, 216,866.04 and 89,169.56

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Solution

The fourth proportional to 157,140.92, 216,866.04 and 89,169.56 is: 123,060.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,140.92 : 216,866.04 = 89,169.56 : x
  2. Step 2: Convert to fraction form
    157,140.92/216,866.04 = 89,169.56/x
  3. Step 3: Cross multiply
    157,140.92x = 216,866.04 × 89,169.56
  4. Step 4: Simplify right side
    157,140.92x = 19,337,849,365.74
  5. Step 5: Solve for x
    x = 19,337,849,365.74/157,140.92
  6. Step 6: Final answer
    x = 123,060.56

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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.