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Finding the Fourth Proportional to 132,718.40, 199,135.20 and 67,054.40

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Solution

The fourth proportional to 132,718.40, 199,135.20 and 67,054.40 is: 100,610.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,718.40 : 199,135.20 = 67,054.40 : x
  2. Step 2: Convert to fraction form
    132,718.40/199,135.20 = 67,054.40/x
  3. Step 3: Cross multiply
    132,718.40x = 199,135.20 × 67,054.40
  4. Step 4: Simplify right side
    132,718.40x = 13,352,891,354.88
  5. Step 5: Solve for x
    x = 13,352,891,354.88/132,718.40
  6. Step 6: Final answer
    x = 100,610.70

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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.