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Finding the Fourth Proportional to 96,929.92, 133,759.88 and 53,909.20

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Solution

The fourth proportional to 96,929.92, 133,759.88 and 53,909.20 is: 74,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,929.92 : 133,759.88 = 53,909.20 : x
  2. Step 2: Convert to fraction form
    96,929.92/133,759.88 = 53,909.20/x
  3. Step 3: Cross multiply
    96,929.92x = 133,759.88 × 53,909.20
  4. Step 4: Simplify right side
    96,929.92x = 7,210,888,122.90
  5. Step 5: Solve for x
    x = 7,210,888,122.90/96,929.92
  6. Step 6: Final answer
    x = 74,392.80

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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.