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Finding the Fourth Proportional to 135,675.92, 187,231.56 and 76,059.92

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Solution

The fourth proportional to 135,675.92, 187,231.56 and 76,059.92 is: 104,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,675.92 : 187,231.56 = 76,059.92 : x
  2. Step 2: Convert to fraction form
    135,675.92/187,231.56 = 76,059.92/x
  3. Step 3: Cross multiply
    135,675.92x = 187,231.56 × 76,059.92
  4. Step 4: Simplify right side
    135,675.92x = 14,240,817,475.08
  5. Step 5: Solve for x
    x = 14,240,817,475.08/135,675.92
  6. Step 6: Final answer
    x = 104,962.01

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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.