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Finding the Fourth Proportional to 71,287.52, 98,360.06 and 48,673.60

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Solution

The fourth proportional to 71,287.52, 98,360.06 and 48,673.60 is: 67,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.52 : 98,360.06 = 48,673.60 : x
  2. Step 2: Convert to fraction form
    71,287.52/98,360.06 = 48,673.60/x
  3. Step 3: Cross multiply
    71,287.52x = 98,360.06 × 48,673.60
  4. Step 4: Simplify right side
    71,287.52x = 4,787,537,727.15
  5. Step 5: Solve for x
    x = 4,787,537,727.15/71,287.52
  6. Step 6: Final answer
    x = 67,158.15

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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.