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Finding the Fourth Proportional to 70,979.34, 106,542.87 and 52,280.49

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Solution

The fourth proportional to 70,979.34, 106,542.87 and 52,280.49 is: 78,475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,979.34 : 106,542.87 = 52,280.49 : x
  2. Step 2: Convert to fraction form
    70,979.34/106,542.87 = 52,280.49/x
  3. Step 3: Cross multiply
    70,979.34x = 106,542.87 × 52,280.49
  4. Step 4: Simplify right side
    70,979.34x = 5,570,113,449.61
  5. Step 5: Solve for x
    x = 5,570,113,449.61/70,979.34
  6. Step 6: Final answer
    x = 78,475.14

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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.