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Finding the Fourth Proportional to 98,656.80, 147,863.70 and 67,066.80

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Solution

The fourth proportional to 98,656.80, 147,863.70 and 67,066.80 is: 100,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,656.80 : 147,863.70 = 67,066.80 : x
  2. Step 2: Convert to fraction form
    98,656.80/147,863.70 = 67,066.80/x
  3. Step 3: Cross multiply
    98,656.80x = 147,863.70 × 67,066.80
  4. Step 4: Simplify right side
    98,656.80x = 9,916,745,195.16
  5. Step 5: Solve for x
    x = 9,916,745,195.16/98,656.80
  6. Step 6: Final answer
    x = 100,517.60

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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.