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Finding the Fourth Proportional to 86,932.80, 130,366.80 and 60,559.20

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Solution

The fourth proportional to 86,932.80, 130,366.80 and 60,559.20 is: 90,816.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,932.80 : 130,366.80 = 60,559.20 : x
  2. Step 2: Convert to fraction form
    86,932.80/130,366.80 = 60,559.20/x
  3. Step 3: Cross multiply
    86,932.80x = 130,366.80 × 60,559.20
  4. Step 4: Simplify right side
    86,932.80x = 7,894,909,114.56
  5. Step 5: Solve for x
    x = 7,894,909,114.56/86,932.80
  6. Step 6: Final answer
    x = 90,816.23

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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.