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Finding the Fourth Proportional to 57,351.64, 79,157.91 and 31,866.76

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Solution

The fourth proportional to 57,351.64, 79,157.91 and 31,866.76 is: 43,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,351.64 : 79,157.91 = 31,866.76 : x
  2. Step 2: Convert to fraction form
    57,351.64/79,157.91 = 31,866.76/x
  3. Step 3: Cross multiply
    57,351.64x = 79,157.91 × 31,866.76
  4. Step 4: Simplify right side
    57,351.64x = 2,522,506,338.52
  5. Step 5: Solve for x
    x = 2,522,506,338.52/57,351.64
  6. Step 6: Final answer
    x = 43,983.16

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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.