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Finding the Fourth Proportional to 69,124.92, 95,394.54 and 39,318.84

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Solution

The fourth proportional to 69,124.92, 95,394.54 and 39,318.84 is: 54,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,124.92 : 95,394.54 = 39,318.84 : x
  2. Step 2: Convert to fraction form
    69,124.92/95,394.54 = 39,318.84/x
  3. Step 3: Cross multiply
    69,124.92x = 95,394.54 × 39,318.84
  4. Step 4: Simplify right side
    69,124.92x = 3,750,802,655.13
  5. Step 5: Solve for x
    x = 3,750,802,655.13/69,124.92
  6. Step 6: Final answer
    x = 54,261.22

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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.