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Finding the Fourth Proportional to 867,634.80, 1,301,452.20 and 441,169.80

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Solution

The fourth proportional to 867,634.80, 1,301,452.20 and 441,169.80 is: 661,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,634.80 : 1,301,452.20 = 441,169.80 : x
  2. Step 2: Convert to fraction form
    867,634.80/1,301,452.20 = 441,169.80/x
  3. Step 3: Cross multiply
    867,634.80x = 1,301,452.20 × 441,169.80
  4. Step 4: Simplify right side
    867,634.80x = 574,161,406,783.56
  5. Step 5: Solve for x
    x = 574,161,406,783.56/867,634.80
  6. Step 6: Final answer
    x = 661,754.70

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Double scale
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Similar ratio
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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.