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Finding the Fourth Proportional to 101,487.66, 140,006.23 and 65,689.17

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Solution

The fourth proportional to 101,487.66, 140,006.23 and 65,689.17 is: 90,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,487.66 : 140,006.23 = 65,689.17 : x
  2. Step 2: Convert to fraction form
    101,487.66/140,006.23 = 65,689.17/x
  3. Step 3: Cross multiply
    101,487.66x = 140,006.23 × 65,689.17
  4. Step 4: Simplify right side
    101,487.66x = 9,196,893,043.53
  5. Step 5: Solve for x
    x = 9,196,893,043.53/101,487.66
  6. Step 6: Final answer
    x = 90,620.80

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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.