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Finding the Fourth Proportional to 72,460.62, 108,691.36 and 32,990.12

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Solution

The fourth proportional to 72,460.62, 108,691.36 and 32,990.12 is: 49,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,460.62 : 108,691.36 = 32,990.12 : x
  2. Step 2: Convert to fraction form
    72,460.62/108,691.36 = 32,990.12/x
  3. Step 3: Cross multiply
    72,460.62x = 108,691.36 × 32,990.12
  4. Step 4: Simplify right side
    72,460.62x = 3,585,741,009.36
  5. Step 5: Solve for x
    x = 3,585,741,009.36/72,460.62
  6. Step 6: Final answer
    x = 49,485.38

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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.