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Finding the Fourth Proportional to 56,849.96, 78,437.76 and 54,607.88

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Solution

The fourth proportional to 56,849.96, 78,437.76 and 54,607.88 is: 75,344.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,849.96 : 78,437.76 = 54,607.88 : x
  2. Step 2: Convert to fraction form
    56,849.96/78,437.76 = 54,607.88/x
  3. Step 3: Cross multiply
    56,849.96x = 78,437.76 × 54,607.88
  4. Step 4: Simplify right side
    56,849.96x = 4,283,319,785.55
  5. Step 5: Solve for x
    x = 4,283,319,785.55/56,849.96
  6. Step 6: Final answer
    x = 75,344.29

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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.