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Finding the Fourth Proportional to 70,004.91, 104,988.54 and 25,631.90

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Solution

The fourth proportional to 70,004.91, 104,988.54 and 25,631.90 is: 38,440.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,004.91 : 104,988.54 = 25,631.90 : x
  2. Step 2: Convert to fraction form
    70,004.91/104,988.54 = 25,631.90/x
  3. Step 3: Cross multiply
    70,004.91x = 104,988.54 × 25,631.90
  4. Step 4: Simplify right side
    70,004.91x = 2,691,055,758.43
  5. Step 5: Solve for x
    x = 2,691,055,758.43/70,004.91
  6. Step 6: Final answer
    x = 38,440.96

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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.