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Finding the Fourth Proportional to 92,557.40, 138,836.10 and 82,448.60

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Solution

The fourth proportional to 92,557.40, 138,836.10 and 82,448.60 is: 123,672.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,557.40 : 138,836.10 = 82,448.60 : x
  2. Step 2: Convert to fraction form
    92,557.40/138,836.10 = 82,448.60/x
  3. Step 3: Cross multiply
    92,557.40x = 138,836.10 × 82,448.60
  4. Step 4: Simplify right side
    92,557.40x = 11,446,842,074.46
  5. Step 5: Solve for x
    x = 11,446,842,074.46/92,557.40
  6. Step 6: Final answer
    x = 123,672.90

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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.