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Finding the Fourth Proportional to 92,652.80, 138,624.96 and 51,128.96

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Solution

The fourth proportional to 92,652.80, 138,624.96 and 51,128.96 is: 76,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,652.80 : 138,624.96 = 51,128.96 : x
  2. Step 2: Convert to fraction form
    92,652.80/138,624.96 = 51,128.96/x
  3. Step 3: Cross multiply
    92,652.80x = 138,624.96 × 51,128.96
  4. Step 4: Simplify right side
    92,652.80x = 7,087,750,034.84
  5. Step 5: Solve for x
    x = 7,087,750,034.84/92,652.80
  6. Step 6: Final answer
    x = 76,497.96

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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.