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Finding the Fourth Proportional to 70,051.28, 104,938.68 and 52,540.88

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Solution

The fourth proportional to 70,051.28, 104,938.68 and 52,540.88 is: 78,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.28 : 104,938.68 = 52,540.88 : x
  2. Step 2: Convert to fraction form
    70,051.28/104,938.68 = 52,540.88/x
  3. Step 3: Cross multiply
    70,051.28x = 104,938.68 × 52,540.88
  4. Step 4: Simplify right side
    70,051.28x = 5,513,570,593.24
  5. Step 5: Solve for x
    x = 5,513,570,593.24/70,051.28
  6. Step 6: Final answer
    x = 78,707.64

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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.