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Finding the Fourth Proportional to 63,899.92, 88,219.56 and 40,059.28

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Solution

The fourth proportional to 63,899.92, 88,219.56 and 40,059.28 is: 55,305.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,899.92 : 88,219.56 = 40,059.28 : x
  2. Step 2: Convert to fraction form
    63,899.92/88,219.56 = 40,059.28/x
  3. Step 3: Cross multiply
    63,899.92x = 88,219.56 × 40,059.28
  4. Step 4: Simplify right side
    63,899.92x = 3,534,012,055.52
  5. Step 5: Solve for x
    x = 3,534,012,055.52/63,899.92
  6. Step 6: Final answer
    x = 55,305.42

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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.