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Finding the Fourth Proportional to 75,410.65, 112,951.95 and 60,648.40

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Solution

The fourth proportional to 75,410.65, 112,951.95 and 60,648.40 is: 90,840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,410.65 : 112,951.95 = 60,648.40 : x
  2. Step 2: Convert to fraction form
    75,410.65/112,951.95 = 60,648.40/x
  3. Step 3: Cross multiply
    75,410.65x = 112,951.95 × 60,648.40
  4. Step 4: Simplify right side
    75,410.65x = 6,850,355,044.38
  5. Step 5: Solve for x
    x = 6,850,355,044.38/75,410.65
  6. Step 6: Final answer
    x = 90,840.68

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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.