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Finding the Fourth Proportional to 316,862.83, 437,280.87 and 173,631.97

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Solution

The fourth proportional to 316,862.83, 437,280.87 and 173,631.97 is: 239,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,862.83 : 437,280.87 = 173,631.97 : x
  2. Step 2: Convert to fraction form
    316,862.83/437,280.87 = 173,631.97/x
  3. Step 3: Cross multiply
    316,862.83x = 437,280.87 × 173,631.97
  4. Step 4: Simplify right side
    316,862.83x = 75,925,938,901.41
  5. Step 5: Solve for x
    x = 75,925,938,901.41/316,862.83
  6. Step 6: Final answer
    x = 239,617.69

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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.