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Finding the Fourth Proportional to 92,729.60, 127,957.44 and 56,921.12

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Solution

The fourth proportional to 92,729.60, 127,957.44 and 56,921.12 is: 78,545.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,729.60 : 127,957.44 = 56,921.12 : x
  2. Step 2: Convert to fraction form
    92,729.60/127,957.44 = 56,921.12/x
  3. Step 3: Cross multiply
    92,729.60x = 127,957.44 × 56,921.12
  4. Step 4: Simplify right side
    92,729.60x = 7,283,480,797.13
  5. Step 5: Solve for x
    x = 7,283,480,797.13/92,729.60
  6. Step 6: Final answer
    x = 78,545.37

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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.