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Finding the Fourth Proportional to 92,479.78, 138,710.67 and 62,685.48

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Solution

The fourth proportional to 92,479.78, 138,710.67 and 62,685.48 is: 94,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,479.78 : 138,710.67 = 62,685.48 : x
  2. Step 2: Convert to fraction form
    92,479.78/138,710.67 = 62,685.48/x
  3. Step 3: Cross multiply
    92,479.78x = 138,710.67 × 62,685.48
  4. Step 4: Simplify right side
    92,479.78x = 8,695,145,702.08
  5. Step 5: Solve for x
    x = 8,695,145,702.08/92,479.78
  6. Step 6: Final answer
    x = 94,022.12

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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.