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Finding the Fourth Proportional to 129,061.80, 193,592.70 and 101,068.20

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Solution

The fourth proportional to 129,061.80, 193,592.70 and 101,068.20 is: 151,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,061.80 : 193,592.70 = 101,068.20 : x
  2. Step 2: Convert to fraction form
    129,061.80/193,592.70 = 101,068.20/x
  3. Step 3: Cross multiply
    129,061.80x = 193,592.70 × 101,068.20
  4. Step 4: Simplify right side
    129,061.80x = 19,566,065,722.14
  5. Step 5: Solve for x
    x = 19,566,065,722.14/129,061.80
  6. Step 6: Final answer
    x = 151,602.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.