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Finding the Fourth Proportional to 316,500.87, 436,781.52 and 173,260.92

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Solution

The fourth proportional to 316,500.87, 436,781.52 and 173,260.92 is: 239,105.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,500.87 : 436,781.52 = 173,260.92 : x
  2. Step 2: Convert to fraction form
    316,500.87/436,781.52 = 173,260.92/x
  3. Step 3: Cross multiply
    316,500.87x = 436,781.52 × 173,260.92
  4. Step 4: Simplify right side
    316,500.87x = 75,677,167,994.20
  5. Step 5: Solve for x
    x = 75,677,167,994.20/316,500.87
  6. Step 6: Final answer
    x = 239,105.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.