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Finding the Fourth Proportional to 71,167.74, 98,209.14 and 39,336.48

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Solution

The fourth proportional to 71,167.74, 98,209.14 and 39,336.48 is: 54,283.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,167.74 : 98,209.14 = 39,336.48 : x
  2. Step 2: Convert to fraction form
    71,167.74/98,209.14 = 39,336.48/x
  3. Step 3: Cross multiply
    71,167.74x = 98,209.14 × 39,336.48
  4. Step 4: Simplify right side
    71,167.74x = 3,863,201,871.43
  5. Step 5: Solve for x
    x = 3,863,201,871.43/71,167.74
  6. Step 6: Final answer
    x = 54,283.05

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1.5x scale

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.