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Finding the Fourth Proportional to 85,070.52, 127,459.98 and 60,065.82

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Solution

The fourth proportional to 85,070.52, 127,459.98 and 60,065.82 is: 89,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.52 : 127,459.98 = 60,065.82 : x
  2. Step 2: Convert to fraction form
    85,070.52/127,459.98 = 60,065.82/x
  3. Step 3: Cross multiply
    85,070.52x = 127,459.98 × 60,065.82
  4. Step 4: Simplify right side
    85,070.52x = 7,655,988,215.88
  5. Step 5: Solve for x
    x = 7,655,988,215.88/85,070.52
  6. Step 6: Final answer
    x = 89,995.78

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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.