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Finding the Fourth Proportional to 56,760.16, 85,009.02 and 54,791.86

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Solution

The fourth proportional to 56,760.16, 85,009.02 and 54,791.86 is: 82,061.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,760.16 : 85,009.02 = 54,791.86 : x
  2. Step 2: Convert to fraction form
    56,760.16/85,009.02 = 54,791.86/x
  3. Step 3: Cross multiply
    56,760.16x = 85,009.02 × 54,791.86
  4. Step 4: Simplify right side
    56,760.16x = 4,657,802,322.58
  5. Step 5: Solve for x
    x = 4,657,802,322.58/56,760.16
  6. Step 6: Final answer
    x = 82,061.12

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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.