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Finding the Fourth Proportional to 86,740.52, 129,902.88 and 44,509.52

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Solution

The fourth proportional to 86,740.52, 129,902.88 and 44,509.52 is: 66,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.52 : 129,902.88 = 44,509.52 : x
  2. Step 2: Convert to fraction form
    86,740.52/129,902.88 = 44,509.52/x
  3. Step 3: Cross multiply
    86,740.52x = 129,902.88 × 44,509.52
  4. Step 4: Simplify right side
    86,740.52x = 5,781,914,835.42
  5. Step 5: Solve for x
    x = 5,781,914,835.42/86,740.52
  6. Step 6: Final answer
    x = 66,657.60

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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.