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Finding the Fourth Proportional to 406,718.67, 561,205.83 and 253,732.56

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Solution

The fourth proportional to 406,718.67, 561,205.83 and 253,732.56 is: 350,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,718.67 : 561,205.83 = 253,732.56 : x
  2. Step 2: Convert to fraction form
    406,718.67/561,205.83 = 253,732.56/x
  3. Step 3: Cross multiply
    406,718.67x = 561,205.83 × 253,732.56
  4. Step 4: Simplify right side
    406,718.67x = 142,396,191,932.83
  5. Step 5: Solve for x
    x = 142,396,191,932.83/406,718.67
  6. Step 6: Final answer
    x = 350,109.80

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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.