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Finding the Fourth Proportional to 86,281.92, 129,463.68 and 36,373.44

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Solution

The fourth proportional to 86,281.92, 129,463.68 and 36,373.44 is: 54,577.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,281.92 : 129,463.68 = 36,373.44 : x
  2. Step 2: Convert to fraction form
    86,281.92/129,463.68 = 36,373.44/x
  3. Step 3: Cross multiply
    86,281.92x = 129,463.68 × 36,373.44
  4. Step 4: Simplify right side
    86,281.92x = 4,709,039,396.66
  5. Step 5: Solve for x
    x = 4,709,039,396.66/86,281.92
  6. Step 6: Final answer
    x = 54,577.36

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1.5x scale

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.