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Finding the Fourth Proportional to 621,207.32, 857,206.96 and 363,144.72

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Solution

The fourth proportional to 621,207.32, 857,206.96 and 363,144.72 is: 501,105.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,207.32 : 857,206.96 = 363,144.72 : x
  2. Step 2: Convert to fraction form
    621,207.32/857,206.96 = 363,144.72/x
  3. Step 3: Cross multiply
    621,207.32x = 857,206.96 × 363,144.72
  4. Step 4: Simplify right side
    621,207.32x = 311,290,181,471.25
  5. Step 5: Solve for x
    x = 311,290,181,471.25/621,207.32
  6. Step 6: Final answer
    x = 501,105.14

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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.