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Finding the Fourth Proportional to 44,496.40, 66,890.40 and 31,439.20

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Solution

The fourth proportional to 44,496.40, 66,890.40 and 31,439.20 is: 47,261.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,496.40 : 66,890.40 = 31,439.20 : x
  2. Step 2: Convert to fraction form
    44,496.40/66,890.40 = 31,439.20/x
  3. Step 3: Cross multiply
    44,496.40x = 66,890.40 × 31,439.20
  4. Step 4: Simplify right side
    44,496.40x = 2,102,980,663.68
  5. Step 5: Solve for x
    x = 2,102,980,663.68/44,496.40
  6. Step 6: Final answer
    x = 47,261.82

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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.