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Finding the Fourth Proportional to 58,926.62, 81,348.82 and 39,906.92

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Solution

The fourth proportional to 58,926.62, 81,348.82 and 39,906.92 is: 55,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,926.62 : 81,348.82 = 39,906.92 : x
  2. Step 2: Convert to fraction form
    58,926.62/81,348.82 = 39,906.92/x
  3. Step 3: Cross multiply
    58,926.62x = 81,348.82 × 39,906.92
  4. Step 4: Simplify right side
    58,926.62x = 3,246,380,851.83
  5. Step 5: Solve for x
    x = 3,246,380,851.83/58,926.62
  6. Step 6: Final answer
    x = 55,091.92

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1.5x scale

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.