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Finding the Fourth Proportional to 436,620.70, 653,618.85 and 259,036.30

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Solution

The fourth proportional to 436,620.70, 653,618.85 and 259,036.30 is: 387,775.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,620.70 : 653,618.85 = 259,036.30 : x
  2. Step 2: Convert to fraction form
    436,620.70/653,618.85 = 259,036.30/x
  3. Step 3: Cross multiply
    436,620.70x = 653,618.85 × 259,036.30
  4. Step 4: Simplify right side
    436,620.70x = 169,311,008,514.26
  5. Step 5: Solve for x
    x = 169,311,008,514.26/436,620.70
  6. Step 6: Final answer
    x = 387,775.95

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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.