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Finding the Fourth Proportional to 25,348.70, 38,019.60 and 6,630.20

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Solution

The fourth proportional to 25,348.70, 38,019.60 and 6,630.20 is: 9,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,348.70 : 38,019.60 = 6,630.20 : x
  2. Step 2: Convert to fraction form
    25,348.70/38,019.60 = 6,630.20/x
  3. Step 3: Cross multiply
    25,348.70x = 38,019.60 × 6,630.20
  4. Step 4: Simplify right side
    25,348.70x = 252,077,551.92
  5. Step 5: Solve for x
    x = 252,077,551.92/25,348.70
  6. Step 6: Final answer
    x = 9,944.40

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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.