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Finding the Fourth Proportional to 503,029.71, 754,543.76 and 129,052.71

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Solution

The fourth proportional to 503,029.71, 754,543.76 and 129,052.71 is: 193,578.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,029.71 : 754,543.76 = 129,052.71 : x
  2. Step 2: Convert to fraction form
    503,029.71/754,543.76 = 129,052.71/x
  3. Step 3: Cross multiply
    503,029.71x = 754,543.76 × 129,052.71
  4. Step 4: Simplify right side
    503,029.71x = 97,375,916,396.33
  5. Step 5: Solve for x
    x = 97,375,916,396.33/503,029.71
  6. Step 6: Final answer
    x = 193,578.86

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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.