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Finding the Fourth Proportional to 86,137.83, 129,232.95 and 44,047.47

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Solution

The fourth proportional to 86,137.83, 129,232.95 and 44,047.47 is: 66,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.83 : 129,232.95 = 44,047.47 : x
  2. Step 2: Convert to fraction form
    86,137.83/129,232.95 = 44,047.47/x
  3. Step 3: Cross multiply
    86,137.83x = 129,232.95 × 44,047.47
  4. Step 4: Simplify right side
    86,137.83x = 5,692,384,488.14
  5. Step 5: Solve for x
    x = 5,692,384,488.14/86,137.83
  6. Step 6: Final answer
    x = 66,084.61

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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.