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Finding the Fourth Proportional to 391,196.16, 586,787.76 and 124,954.80

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Solution

The fourth proportional to 391,196.16, 586,787.76 and 124,954.80 is: 187,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,196.16 : 586,787.76 = 124,954.80 : x
  2. Step 2: Convert to fraction form
    391,196.16/586,787.76 = 124,954.80/x
  3. Step 3: Cross multiply
    391,196.16x = 586,787.76 × 124,954.80
  4. Step 4: Simplify right side
    391,196.16x = 73,321,947,193.25
  5. Step 5: Solve for x
    x = 73,321,947,193.25/391,196.16
  6. Step 6: Final answer
    x = 187,430.13

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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.