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Finding the Fourth Proportional to 424,490.28, 636,516.27 and 124,931.94

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Solution

The fourth proportional to 424,490.28, 636,516.27 and 124,931.94 is: 187,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,490.28 : 636,516.27 = 124,931.94 : x
  2. Step 2: Convert to fraction form
    424,490.28/636,516.27 = 124,931.94/x
  3. Step 3: Cross multiply
    424,490.28x = 636,516.27 × 124,931.94
  4. Step 4: Simplify right side
    424,490.28x = 79,521,212,452.66
  5. Step 5: Solve for x
    x = 79,521,212,452.66/424,490.28
  6. Step 6: Final answer
    x = 187,333.41

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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.