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Finding the Fourth Proportional to 71,673.12, 98,580.11 and 57,494.88

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Solution

The fourth proportional to 71,673.12, 98,580.11 and 57,494.88 is: 79,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.12 : 98,580.11 = 57,494.88 : x
  2. Step 2: Convert to fraction form
    71,673.12/98,580.11 = 57,494.88/x
  3. Step 3: Cross multiply
    71,673.12x = 98,580.11 × 57,494.88
  4. Step 4: Simplify right side
    71,673.12x = 5,667,851,307.36
  5. Step 5: Solve for x
    x = 5,667,851,307.36/71,673.12
  6. Step 6: Final answer
    x = 79,079.18

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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.