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Finding the Fourth Proportional to 86,575.34, 129,983.81 and 44,491.10

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Solution

The fourth proportional to 86,575.34, 129,983.81 and 44,491.10 is: 66,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,575.34 : 129,983.81 = 44,491.10 : x
  2. Step 2: Convert to fraction form
    86,575.34/129,983.81 = 44,491.10/x
  3. Step 3: Cross multiply
    86,575.34x = 129,983.81 × 44,491.10
  4. Step 4: Simplify right side
    86,575.34x = 5,783,121,816.72
  5. Step 5: Solve for x
    x = 5,783,121,816.72/86,575.34
  6. Step 6: Final answer
    x = 66,798.72

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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.