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Finding the Fourth Proportional to 424,869.61, 637,084.80 and 125,311.97

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Solution

The fourth proportional to 424,869.61, 637,084.80 and 125,311.97 is: 187,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,869.61 : 637,084.80 = 125,311.97 : x
  2. Step 2: Convert to fraction form
    424,869.61/637,084.80 = 125,311.97/x
  3. Step 3: Cross multiply
    424,869.61x = 637,084.80 × 125,311.97
  4. Step 4: Simplify right side
    424,869.61x = 79,834,351,345.06
  5. Step 5: Solve for x
    x = 79,834,351,345.06/424,869.61
  6. Step 6: Final answer
    x = 187,903.18

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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.