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Finding the Fourth Proportional to 77,928.60, 107,542.62 and 44,393.88

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Solution

The fourth proportional to 77,928.60, 107,542.62 and 44,393.88 is: 61,264.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,928.60 : 107,542.62 = 44,393.88 : x
  2. Step 2: Convert to fraction form
    77,928.60/107,542.62 = 44,393.88/x
  3. Step 3: Cross multiply
    77,928.60x = 107,542.62 × 44,393.88
  4. Step 4: Simplify right side
    77,928.60x = 4,774,234,167.17
  5. Step 5: Solve for x
    x = 4,774,234,167.17/77,928.60
  6. Step 6: Final answer
    x = 61,264.21

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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.