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Finding the Fourth Proportional to 57,490.90, 79,337.32 and 32,340.40

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Solution

The fourth proportional to 57,490.90, 79,337.32 and 32,340.40 is: 44,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,490.90 : 79,337.32 = 32,340.40 : x
  2. Step 2: Convert to fraction form
    57,490.90/79,337.32 = 32,340.40/x
  3. Step 3: Cross multiply
    57,490.90x = 79,337.32 × 32,340.40
  4. Step 4: Simplify right side
    57,490.90x = 2,565,800,663.73
  5. Step 5: Solve for x
    x = 2,565,800,663.73/57,490.90
  6. Step 6: Final answer
    x = 44,629.68

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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.