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Finding the Fourth Proportional to 92,223.40, 138,335.10 and 67,145.80

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Solution

The fourth proportional to 92,223.40, 138,335.10 and 67,145.80 is: 100,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,223.40 : 138,335.10 = 67,145.80 : x
  2. Step 2: Convert to fraction form
    92,223.40/138,335.10 = 67,145.80/x
  3. Step 3: Cross multiply
    92,223.40x = 138,335.10 × 67,145.80
  4. Step 4: Simplify right side
    92,223.40x = 9,288,620,957.58
  5. Step 5: Solve for x
    x = 9,288,620,957.58/92,223.40
  6. Step 6: Final answer
    x = 100,718.70

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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.