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Finding the Fourth Proportional to 90,468.33, 124,764.53 and 56,479.92

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Solution

The fourth proportional to 90,468.33, 124,764.53 and 56,479.92 is: 77,891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,468.33 : 124,764.53 = 56,479.92 : x
  2. Step 2: Convert to fraction form
    90,468.33/124,764.53 = 56,479.92/x
  3. Step 3: Cross multiply
    90,468.33x = 124,764.53 × 56,479.92
  4. Step 4: Simplify right side
    90,468.33x = 7,046,690,390.84
  5. Step 5: Solve for x
    x = 7,046,690,390.84/90,468.33
  6. Step 6: Final answer
    x = 77,891.24

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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.