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Finding the Fourth Proportional to 57,641.92, 79,532.31 and 34,980.40

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Solution

The fourth proportional to 57,641.92, 79,532.31 and 34,980.40 is: 48,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,641.92 : 79,532.31 = 34,980.40 : x
  2. Step 2: Convert to fraction form
    57,641.92/79,532.31 = 34,980.40/x
  3. Step 3: Cross multiply
    57,641.92x = 79,532.31 × 34,980.40
  4. Step 4: Simplify right side
    57,641.92x = 2,782,071,728.48
  5. Step 5: Solve for x
    x = 2,782,071,728.48/57,641.92
  6. Step 6: Final answer
    x = 48,264.73

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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.