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Finding the Fourth Proportional to 92,490.60, 138,808.88 and 47,510.16

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Solution

The fourth proportional to 92,490.60, 138,808.88 and 47,510.16 is: 71,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,490.60 : 138,808.88 = 47,510.16 : x
  2. Step 2: Convert to fraction form
    92,490.60/138,808.88 = 47,510.16/x
  3. Step 3: Cross multiply
    92,490.60x = 138,808.88 × 47,510.16
  4. Step 4: Simplify right side
    92,490.60x = 6,594,832,098.22
  5. Step 5: Solve for x
    x = 6,594,832,098.22/92,490.60
  6. Step 6: Final answer
    x = 71,302.73

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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.