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Finding the Fourth Proportional to 83,912.04, 115,798.90 and 48,104.20

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Solution

The fourth proportional to 83,912.04, 115,798.90 and 48,104.20 is: 66,383.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,912.04 : 115,798.90 = 48,104.20 : x
  2. Step 2: Convert to fraction form
    83,912.04/115,798.90 = 48,104.20/x
  3. Step 3: Cross multiply
    83,912.04x = 115,798.90 × 48,104.20
  4. Step 4: Simplify right side
    83,912.04x = 5,570,413,445.38
  5. Step 5: Solve for x
    x = 5,570,413,445.38/83,912.04
  6. Step 6: Final answer
    x = 66,383.96

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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.