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Finding the Fourth Proportional to 86,013.61, 129,023.84 and 26,849.29

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Solution

The fourth proportional to 86,013.61, 129,023.84 and 26,849.29 is: 40,275.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,013.61 : 129,023.84 = 26,849.29 : x
  2. Step 2: Convert to fraction form
    86,013.61/129,023.84 = 26,849.29/x
  3. Step 3: Cross multiply
    86,013.61x = 129,023.84 × 26,849.29
  4. Step 4: Simplify right side
    86,013.61x = 3,464,198,332.53
  5. Step 5: Solve for x
    x = 3,464,198,332.53/86,013.61
  6. Step 6: Final answer
    x = 40,275.00

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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.