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Finding the Fourth Proportional to 57,145.04, 78,867.72 and 34,496.88

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Solution

The fourth proportional to 57,145.04, 78,867.72 and 34,496.88 is: 47,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,145.04 : 78,867.72 = 34,496.88 : x
  2. Step 2: Convert to fraction form
    57,145.04/78,867.72 = 34,496.88/x
  3. Step 3: Cross multiply
    57,145.04x = 78,867.72 × 34,496.88
  4. Step 4: Simplify right side
    57,145.04x = 2,720,690,272.71
  5. Step 5: Solve for x
    x = 2,720,690,272.71/57,145.04
  6. Step 6: Final answer
    x = 47,610.26

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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.