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Finding the Fourth Proportional to 78,031.71, 107,675.96 and 44,036.91

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Solution

The fourth proportional to 78,031.71, 107,675.96 and 44,036.91 is: 60,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,031.71 : 107,675.96 = 44,036.91 : x
  2. Step 2: Convert to fraction form
    78,031.71/107,675.96 = 44,036.91/x
  3. Step 3: Cross multiply
    78,031.71x = 107,675.96 × 44,036.91
  4. Step 4: Simplify right side
    78,031.71x = 4,741,716,131.40
  5. Step 5: Solve for x
    x = 4,741,716,131.40/78,031.71
  6. Step 6: Final answer
    x = 60,766.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.