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Finding the Fourth Proportional to 70,925.76, 106,399.17 and 25,949.43

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Solution

The fourth proportional to 70,925.76, 106,399.17 and 25,949.43 is: 38,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,925.76 : 106,399.17 = 25,949.43 : x
  2. Step 2: Convert to fraction form
    70,925.76/106,399.17 = 25,949.43/x
  3. Step 3: Cross multiply
    70,925.76x = 106,399.17 × 25,949.43
  4. Step 4: Simplify right side
    70,925.76x = 2,760,997,813.97
  5. Step 5: Solve for x
    x = 2,760,997,813.97/70,925.76
  6. Step 6: Final answer
    x = 38,928.00

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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.