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Finding the Fourth Proportional to 143,872.40, 215,824.80 and 44,031.80

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Solution

The fourth proportional to 143,872.40, 215,824.80 and 44,031.80 is: 66,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,872.40 : 215,824.80 = 44,031.80 : x
  2. Step 2: Convert to fraction form
    143,872.40/215,824.80 = 44,031.80/x
  3. Step 3: Cross multiply
    143,872.40x = 215,824.80 × 44,031.80
  4. Step 4: Simplify right side
    143,872.40x = 9,503,154,428.64
  5. Step 5: Solve for x
    x = 9,503,154,428.64/143,872.40
  6. Step 6: Final answer
    x = 66,052.66

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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.