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Finding the Fourth Proportional to 73,152.20, 109,728.30 and 49,532.60

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Solution

The fourth proportional to 73,152.20, 109,728.30 and 49,532.60 is: 74,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,152.20 : 109,728.30 = 49,532.60 : x
  2. Step 2: Convert to fraction form
    73,152.20/109,728.30 = 49,532.60/x
  3. Step 3: Cross multiply
    73,152.20x = 109,728.30 × 49,532.60
  4. Step 4: Simplify right side
    73,152.20x = 5,435,127,992.58
  5. Step 5: Solve for x
    x = 5,435,127,992.58/73,152.20
  6. Step 6: Final answer
    x = 74,298.90

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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.