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Finding the Fourth Proportional to 70,490.52, 97,278.17 and 38,659.14

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Solution

The fourth proportional to 70,490.52, 97,278.17 and 38,659.14 is: 53,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,490.52 : 97,278.17 = 38,659.14 : x
  2. Step 2: Convert to fraction form
    70,490.52/97,278.17 = 38,659.14/x
  3. Step 3: Cross multiply
    70,490.52x = 97,278.17 × 38,659.14
  4. Step 4: Simplify right side
    70,490.52x = 3,760,690,199.68
  5. Step 5: Solve for x
    x = 3,760,690,199.68/70,490.52
  6. Step 6: Final answer
    x = 53,350.30

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1.5x scale

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.