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Finding the Fourth Proportional to 72,366.60, 108,555.30 and 25,613.40

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Solution

The fourth proportional to 72,366.60, 108,555.30 and 25,613.40 is: 38,422.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366.60 : 108,555.30 = 25,613.40 : x
  2. Step 2: Convert to fraction form
    72,366.60/108,555.30 = 25,613.40/x
  3. Step 3: Cross multiply
    72,366.60x = 108,555.30 × 25,613.40
  4. Step 4: Simplify right side
    72,366.60x = 2,780,470,321.02
  5. Step 5: Solve for x
    x = 2,780,470,321.02/72,366.60
  6. Step 6: Final answer
    x = 38,422.01

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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.