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Finding the Fourth Proportional to 57,478.62, 79,265.91 and 38,062.92

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Solution

The fourth proportional to 57,478.62, 79,265.91 and 38,062.92 is: 52,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,478.62 : 79,265.91 = 38,062.92 : x
  2. Step 2: Convert to fraction form
    57,478.62/79,265.91 = 38,062.92/x
  3. Step 3: Cross multiply
    57,478.62x = 79,265.91 × 38,062.92
  4. Step 4: Simplify right side
    57,478.62x = 3,017,091,991.06
  5. Step 5: Solve for x
    x = 3,017,091,991.06/57,478.62
  6. Step 6: Final answer
    x = 52,490.68

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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.