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Finding the Fourth Proportional to 57,672, 79,515.27 and 48,125.61

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Solution

The fourth proportional to 57,672, 79,515.27 and 48,125.61 is: 66,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,672 : 79,515.27 = 48,125.61 : x
  2. Step 2: Convert to fraction form
    57,672/79,515.27 = 48,125.61/x
  3. Step 3: Cross multiply
    57,672x = 79,515.27 × 48,125.61
  4. Step 4: Simplify right side
    57,672x = 3,826,720,873.06
  5. Step 5: Solve for x
    x = 3,826,720,873.06/57,672
  6. Step 6: Final answer
    x = 66,353.18

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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.