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Finding the Fourth Proportional to 503,844,423.20, 755,766,634.80 and 417,750,981.20

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Solution

The fourth proportional to 503,844,423.20, 755,766,634.80 and 417,750,981.20 is: 626,626,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,844,423.20 : 755,766,634.80 = 417,750,981.20 : x
  2. Step 2: Convert to fraction form
    503,844,423.20/755,766,634.80 = 417,750,981.20/x
  3. Step 3: Cross multiply
    503,844,423.20x = 755,766,634.80 × 417,750,981.20
  4. Step 4: Simplify right side
    503,844,423.20x = 315,722,253,245,922,048
  5. Step 5: Solve for x
    x = 315,722,253,245,922,048/503,844,423.20
  6. Step 6: Final answer
    x = 626,626,471.80

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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.