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Finding the Fourth Proportional to 65,738.80, 98,608.20 and 52,616.80

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Solution

The fourth proportional to 65,738.80, 98,608.20 and 52,616.80 is: 78,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,738.80 : 98,608.20 = 52,616.80 : x
  2. Step 2: Convert to fraction form
    65,738.80/98,608.20 = 52,616.80/x
  3. Step 3: Cross multiply
    65,738.80x = 98,608.20 × 52,616.80
  4. Step 4: Simplify right side
    65,738.80x = 5,188,447,937.76
  5. Step 5: Solve for x
    x = 5,188,447,937.76/65,738.80
  6. Step 6: Final answer
    x = 78,925.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.