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Finding the Fourth Proportional to 90,098.87, 124,315.80 and 53,793.28

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Solution

The fourth proportional to 90,098.87, 124,315.80 and 53,793.28 is: 74,222.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,098.87 : 124,315.80 = 53,793.28 : x
  2. Step 2: Convert to fraction form
    90,098.87/124,315.80 = 53,793.28/x
  3. Step 3: Cross multiply
    90,098.87x = 124,315.80 × 53,793.28
  4. Step 4: Simplify right side
    90,098.87x = 6,687,354,591.49
  5. Step 5: Solve for x
    x = 6,687,354,591.49/90,098.87
  6. Step 6: Final answer
    x = 74,222.41

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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.