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Finding the Fourth Proportional to 436,616.70, 653,612.85 and 259,032.30

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Solution

The fourth proportional to 436,616.70, 653,612.85 and 259,032.30 is: 387,769.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,616.70 : 653,612.85 = 259,032.30 : x
  2. Step 2: Convert to fraction form
    436,616.70/653,612.85 = 259,032.30/x
  3. Step 3: Cross multiply
    436,616.70x = 653,612.85 × 259,032.30
  4. Step 4: Simplify right side
    436,616.70x = 169,306,839,845.06
  5. Step 5: Solve for x
    x = 169,306,839,845.06/436,616.70
  6. Step 6: Final answer
    x = 387,769.96

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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.