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Finding the Fourth Proportional to 99,575.64, 137,548.67 and 92,489.76

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Solution

The fourth proportional to 99,575.64, 137,548.67 and 92,489.76 is: 127,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,575.64 : 137,548.67 = 92,489.76 : x
  2. Step 2: Convert to fraction form
    99,575.64/137,548.67 = 92,489.76/x
  3. Step 3: Cross multiply
    99,575.64x = 137,548.67 × 92,489.76
  4. Step 4: Simplify right side
    99,575.64x = 12,721,843,014.17
  5. Step 5: Solve for x
    x = 12,721,843,014.17/99,575.64
  6. Step 6: Final answer
    x = 127,760.60

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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.