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Finding the Fourth Proportional to 98,734.20, 148,101.30 and 67,241.40

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Solution

The fourth proportional to 98,734.20, 148,101.30 and 67,241.40 is: 100,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,734.20 : 148,101.30 = 67,241.40 : x
  2. Step 2: Convert to fraction form
    98,734.20/148,101.30 = 67,241.40/x
  3. Step 3: Cross multiply
    98,734.20x = 148,101.30 × 67,241.40
  4. Step 4: Simplify right side
    98,734.20x = 9,958,538,753.82
  5. Step 5: Solve for x
    x = 9,958,538,753.82/98,734.20
  6. Step 6: Final answer
    x = 100,862.10

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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.