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Finding the Fourth Proportional to 86,720.94, 130,081.44 and 24,391.44

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Solution

The fourth proportional to 86,720.94, 130,081.44 and 24,391.44 is: 36,587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.94 : 130,081.44 = 24,391.44 : x
  2. Step 2: Convert to fraction form
    86,720.94/130,081.44 = 24,391.44/x
  3. Step 3: Cross multiply
    86,720.94x = 130,081.44 × 24,391.44
  4. Step 4: Simplify right side
    86,720.94x = 3,172,873,638.87
  5. Step 5: Solve for x
    x = 3,172,873,638.87/86,720.94
  6. Step 6: Final answer
    x = 36,587.17

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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.