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Finding the Fourth Proportional to 89,686.80, 134,530.20 and 67,233.60

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Solution

The fourth proportional to 89,686.80, 134,530.20 and 67,233.60 is: 100,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,686.80 : 134,530.20 = 67,233.60 : x
  2. Step 2: Convert to fraction form
    89,686.80/134,530.20 = 67,233.60/x
  3. Step 3: Cross multiply
    89,686.80x = 134,530.20 × 67,233.60
  4. Step 4: Simplify right side
    89,686.80x = 9,044,949,654.72
  5. Step 5: Solve for x
    x = 9,044,949,654.72/89,686.80
  6. Step 6: Final answer
    x = 100,850.40

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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.