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Finding the Fourth Proportional to 636,112.92, 877,963.50 and 377,940.18

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Solution

The fourth proportional to 636,112.92, 877,963.50 and 377,940.18 is: 521,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,112.92 : 877,963.50 = 377,940.18 : x
  2. Step 2: Convert to fraction form
    636,112.92/877,963.50 = 377,940.18/x
  3. Step 3: Cross multiply
    636,112.92x = 877,963.50 × 377,940.18
  4. Step 4: Simplify right side
    636,112.92x = 331,817,683,223.43
  5. Step 5: Solve for x
    x = 331,817,683,223.43/636,112.92
  6. Step 6: Final answer
    x = 521,633.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.