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Finding the Fourth Proportional to 292,310.91, 438,478.56 and 92,626.88

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Solution

The fourth proportional to 292,310.91, 438,478.56 and 92,626.88 is: 138,944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,310.91 : 438,478.56 = 92,626.88 : x
  2. Step 2: Convert to fraction form
    292,310.91/438,478.56 = 92,626.88/x
  3. Step 3: Cross multiply
    292,310.91x = 438,478.56 × 92,626.88
  4. Step 4: Simplify right side
    292,310.91x = 40,614,898,767.30
  5. Step 5: Solve for x
    x = 40,614,898,767.30/292,310.91
  6. Step 6: Final answer
    x = 138,944.18

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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.