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Finding the Fourth Proportional to 86,398.48, 129,615.36 and 48,975.27

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Solution

The fourth proportional to 86,398.48, 129,615.36 and 48,975.27 is: 73,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,398.48 : 129,615.36 = 48,975.27 : x
  2. Step 2: Convert to fraction form
    86,398.48/129,615.36 = 48,975.27/x
  3. Step 3: Cross multiply
    86,398.48x = 129,615.36 × 48,975.27
  4. Step 4: Simplify right side
    86,398.48x = 6,347,947,252.15
  5. Step 5: Solve for x
    x = 6,347,947,252.15/86,398.48
  6. Step 6: Final answer
    x = 73,472.90

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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.