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Finding the Fourth Proportional to 92,593.10, 138,080.31 and 82,387.10

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Solution

The fourth proportional to 92,593.10, 138,080.31 and 82,387.10 is: 122,860.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,593.10 : 138,080.31 = 82,387.10 : x
  2. Step 2: Convert to fraction form
    92,593.10/138,080.31 = 82,387.10/x
  3. Step 3: Cross multiply
    92,593.10x = 138,080.31 × 82,387.10
  4. Step 4: Simplify right side
    92,593.10x = 11,376,036,308.00
  5. Step 5: Solve for x
    x = 11,376,036,308.00/92,593.10
  6. Step 6: Final answer
    x = 122,860.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.