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Finding the Fourth Proportional to 86,700.68, 130,059.68 and 23,521.79

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Solution

The fourth proportional to 86,700.68, 130,059.68 and 23,521.79 is: 35,285.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,700.68 : 130,059.68 = 23,521.79 : x
  2. Step 2: Convert to fraction form
    86,700.68/130,059.68 = 23,521.79/x
  3. Step 3: Cross multiply
    86,700.68x = 130,059.68 × 23,521.79
  4. Step 4: Simplify right side
    86,700.68x = 3,059,236,687.97
  5. Step 5: Solve for x
    x = 3,059,236,687.97/86,700.68
  6. Step 6: Final answer
    x = 35,285.04

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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.