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Finding the Fourth Proportional to 82,732.68, 124,127.10 and 36,016.20

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Solution

The fourth proportional to 82,732.68, 124,127.10 and 36,016.20 is: 54,036.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,732.68 : 124,127.10 = 36,016.20 : x
  2. Step 2: Convert to fraction form
    82,732.68/124,127.10 = 36,016.20/x
  3. Step 3: Cross multiply
    82,732.68x = 124,127.10 × 36,016.20
  4. Step 4: Simplify right side
    82,732.68x = 4,470,586,459.02
  5. Step 5: Solve for x
    x = 4,470,586,459.02/82,732.68
  6. Step 6: Final answer
    x = 54,036.52

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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.