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Finding the Fourth Proportional to 611,793.90, 917,690.85 and 454,329.90

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Solution

The fourth proportional to 611,793.90, 917,690.85 and 454,329.90 is: 681,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,793.90 : 917,690.85 = 454,329.90 : x
  2. Step 2: Convert to fraction form
    611,793.90/917,690.85 = 454,329.90/x
  3. Step 3: Cross multiply
    611,793.90x = 917,690.85 × 454,329.90
  4. Step 4: Simplify right side
    611,793.90x = 416,934,392,111.42
  5. Step 5: Solve for x
    x = 416,934,392,111.42/611,793.90
  6. Step 6: Final answer
    x = 681,494.85

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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.