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Finding the Fourth Proportional to 86,252.84, 129,410.76 and 36,345.44

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Solution

The fourth proportional to 86,252.84, 129,410.76 and 36,345.44 is: 54,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,252.84 : 129,410.76 = 36,345.44 : x
  2. Step 2: Convert to fraction form
    86,252.84/129,410.76 = 36,345.44/x
  3. Step 3: Cross multiply
    86,252.84x = 129,410.76 × 36,345.44
  4. Step 4: Simplify right side
    86,252.84x = 4,703,491,012.93
  5. Step 5: Solve for x
    x = 4,703,491,012.93/86,252.84
  6. Step 6: Final answer
    x = 54,531.43

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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.