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Finding the Fourth Proportional to 92,718.90, 138,298.88 and 84,204.97

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Solution

The fourth proportional to 92,718.90, 138,298.88 and 84,204.97 is: 125,599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,718.90 : 138,298.88 = 84,204.97 : x
  2. Step 2: Convert to fraction form
    92,718.90/138,298.88 = 84,204.97/x
  3. Step 3: Cross multiply
    92,718.90x = 138,298.88 × 84,204.97
  4. Step 4: Simplify right side
    92,718.90x = 11,645,452,906.20
  5. Step 5: Solve for x
    x = 11,645,452,906.20/92,718.90
  6. Step 6: Final answer
    x = 125,599.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.