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Finding the Fourth Proportional to 86,486.46, 129,496.05 and 44,845.98

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Solution

The fourth proportional to 86,486.46, 129,496.05 and 44,845.98 is: 67,147.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,486.46 : 129,496.05 = 44,845.98 : x
  2. Step 2: Convert to fraction form
    86,486.46/129,496.05 = 44,845.98/x
  3. Step 3: Cross multiply
    86,486.46x = 129,496.05 × 44,845.98
  4. Step 4: Simplify right side
    86,486.46x = 5,807,377,268.38
  5. Step 5: Solve for x
    x = 5,807,377,268.38/86,486.46
  6. Step 6: Final answer
    x = 67,147.82

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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.