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Finding the Fourth Proportional to 719,853.75, 993,398.22 and 418,067.19

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Solution

The fourth proportional to 719,853.75, 993,398.22 and 418,067.19 is: 576,932.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,853.75 : 993,398.22 = 418,067.19 : x
  2. Step 2: Convert to fraction form
    719,853.75/993,398.22 = 418,067.19/x
  3. Step 3: Cross multiply
    719,853.75x = 993,398.22 × 418,067.19
  4. Step 4: Simplify right side
    719,853.75x = 415,307,202,386.40
  5. Step 5: Solve for x
    x = 415,307,202,386.40/719,853.75
  6. Step 6: Final answer
    x = 576,932.75

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Double scale
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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.