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Finding the Fourth Proportional to 116,711.78, 161,060.13 and 65,724.30

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Solution

The fourth proportional to 116,711.78, 161,060.13 and 65,724.30 is: 90,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,711.78 : 161,060.13 = 65,724.30 : x
  2. Step 2: Convert to fraction form
    116,711.78/161,060.13 = 65,724.30/x
  3. Step 3: Cross multiply
    116,711.78x = 161,060.13 × 65,724.30
  4. Step 4: Simplify right side
    116,711.78x = 10,585,564,302.16
  5. Step 5: Solve for x
    x = 10,585,564,302.16/116,711.78
  6. Step 6: Final answer
    x = 90,698.34

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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.