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Finding the Fourth Proportional to 57,310.95, 85,966.02 and 31,181.79

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Solution

The fourth proportional to 57,310.95, 85,966.02 and 31,181.79 is: 46,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,310.95 : 85,966.02 = 31,181.79 : x
  2. Step 2: Convert to fraction form
    57,310.95/85,966.02 = 31,181.79/x
  3. Step 3: Cross multiply
    57,310.95x = 85,966.02 × 31,181.79
  4. Step 4: Simplify right side
    57,310.95x = 2,680,574,382.78
  5. Step 5: Solve for x
    x = 2,680,574,382.78/57,310.95
  6. Step 6: Final answer
    x = 46,772.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.