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Finding the Fourth Proportional to 626,591.91, 865,146.20 and 385,198.11

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Solution

The fourth proportional to 626,591.91, 865,146.20 and 385,198.11 is: 531,849.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,591.91 : 865,146.20 = 385,198.11 : x
  2. Step 2: Convert to fraction form
    626,591.91/865,146.20 = 385,198.11/x
  3. Step 3: Cross multiply
    626,591.91x = 865,146.20 × 385,198.11
  4. Step 4: Simplify right side
    626,591.91x = 333,252,679,187.69
  5. Step 5: Solve for x
    x = 333,252,679,187.69/626,591.91
  6. Step 6: Final answer
    x = 531,849.64

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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.