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Finding the Fourth Proportional to 868,782.82, 1,198,209.42 and 611,511.42

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Solution

The fourth proportional to 868,782.82, 1,198,209.42 and 611,511.42 is: 843,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,782.82 : 1,198,209.42 = 611,511.42 : x
  2. Step 2: Convert to fraction form
    868,782.82/1,198,209.42 = 611,511.42/x
  3. Step 3: Cross multiply
    868,782.82x = 1,198,209.42 × 611,511.42
  4. Step 4: Simplify right side
    868,782.82x = 732,718,743,881.58
  5. Step 5: Solve for x
    x = 732,718,743,881.58/868,782.82
  6. Step 6: Final answer
    x = 843,385.40

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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.