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Finding the Fourth Proportional to 424,564.52, 636,744.72 and 124,963.76

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Solution

The fourth proportional to 424,564.52, 636,744.72 and 124,963.76 is: 187,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,564.52 : 636,744.72 = 124,963.76 : x
  2. Step 2: Convert to fraction form
    424,564.52/636,744.72 = 124,963.76/x
  3. Step 3: Cross multiply
    424,564.52x = 636,744.72 × 124,963.76
  4. Step 4: Simplify right side
    424,564.52x = 79,570,014,371.35
  5. Step 5: Solve for x
    x = 79,570,014,371.35/424,564.52
  6. Step 6: Final answer
    x = 187,415.60

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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.