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Finding the Fourth Proportional to 38,398.60, 57,597.88 and 12,105.40

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Solution

The fourth proportional to 38,398.60, 57,597.88 and 12,105.40 is: 18,158.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,398.60 : 57,597.88 = 12,105.40 : x
  2. Step 2: Convert to fraction form
    38,398.60/57,597.88 = 12,105.40/x
  3. Step 3: Cross multiply
    38,398.60x = 57,597.88 × 12,105.40
  4. Step 4: Simplify right side
    38,398.60x = 697,245,376.55
  5. Step 5: Solve for x
    x = 697,245,376.55/38,398.60
  6. Step 6: Final answer
    x = 18,158.09

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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.