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Finding the Fourth Proportional to 424,448.18, 636,773.42 and 124,938.53

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Solution

The fourth proportional to 424,448.18, 636,773.42 and 124,938.53 is: 187,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,448.18 : 636,773.42 = 124,938.53 : x
  2. Step 2: Convert to fraction form
    424,448.18/636,773.42 = 124,938.53/x
  3. Step 3: Cross multiply
    424,448.18x = 636,773.42 × 124,938.53
  4. Step 4: Simplify right side
    424,448.18x = 79,557,535,037.87
  5. Step 5: Solve for x
    x = 79,557,535,037.87/424,448.18
  6. Step 6: Final answer
    x = 187,437.57

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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.