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Finding the Fourth Proportional to 619,854.80, 929,781.60 and 170,578.24

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Solution

The fourth proportional to 619,854.80, 929,781.60 and 170,578.24 is: 255,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,854.80 : 929,781.60 = 170,578.24 : x
  2. Step 2: Convert to fraction form
    619,854.80/929,781.60 = 170,578.24/x
  3. Step 3: Cross multiply
    619,854.80x = 929,781.60 × 170,578.24
  4. Step 4: Simplify right side
    619,854.80x = 158,600,508,912.38
  5. Step 5: Solve for x
    x = 158,600,508,912.38/619,854.80
  6. Step 6: Final answer
    x = 255,867.19

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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.