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Finding the Fourth Proportional to 108,974.60, 163,461.90 and 38,856.20

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Solution

The fourth proportional to 108,974.60, 163,461.90 and 38,856.20 is: 58,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,974.60 : 163,461.90 = 38,856.20 : x
  2. Step 2: Convert to fraction form
    108,974.60/163,461.90 = 38,856.20/x
  3. Step 3: Cross multiply
    108,974.60x = 163,461.90 × 38,856.20
  4. Step 4: Simplify right side
    108,974.60x = 6,351,508,278.78
  5. Step 5: Solve for x
    x = 6,351,508,278.78/108,974.60
  6. Step 6: Final answer
    x = 58,284.30

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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.