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Finding the Fourth Proportional to 424,490.64, 636,516.84 and 124,932.36

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Solution

The fourth proportional to 424,490.64, 636,516.84 and 124,932.36 is: 187,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,490.64 : 636,516.84 = 124,932.36 : x
  2. Step 2: Convert to fraction form
    424,490.64/636,516.84 = 124,932.36/x
  3. Step 3: Cross multiply
    424,490.64x = 636,516.84 × 124,932.36
  4. Step 4: Simplify right side
    424,490.64x = 79,521,551,000.94
  5. Step 5: Solve for x
    x = 79,521,551,000.94/424,490.64
  6. Step 6: Final answer
    x = 187,334.05

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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.