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Finding the Fourth Proportional to 71,568.24, 98,759.20 and 39,734.64

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Solution

The fourth proportional to 71,568.24, 98,759.20 and 39,734.64 is: 54,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,568.24 : 98,759.20 = 39,734.64 : x
  2. Step 2: Convert to fraction form
    71,568.24/98,759.20 = 39,734.64/x
  3. Step 3: Cross multiply
    71,568.24x = 98,759.20 × 39,734.64
  4. Step 4: Simplify right side
    71,568.24x = 3,924,161,258.69
  5. Step 5: Solve for x
    x = 3,924,161,258.69/71,568.24
  6. Step 6: Final answer
    x = 54,831.04

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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.