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Finding the Fourth Proportional to 173,631.20, 260,446.80 and 75,327.20

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Solution

The fourth proportional to 173,631.20, 260,446.80 and 75,327.20 is: 112,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,631.20 : 260,446.80 = 75,327.20 : x
  2. Step 2: Convert to fraction form
    173,631.20/260,446.80 = 75,327.20/x
  3. Step 3: Cross multiply
    173,631.20x = 260,446.80 × 75,327.20
  4. Step 4: Simplify right side
    173,631.20x = 19,618,728,192.96
  5. Step 5: Solve for x
    x = 19,618,728,192.96/173,631.20
  6. Step 6: Final answer
    x = 112,990.80

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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.