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Finding the Fourth Proportional to 616,243.80, 925,920.90 and 391,711.80

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Solution

The fourth proportional to 616,243.80, 925,920.90 and 391,711.80 is: 588,556.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,243.80 : 925,920.90 = 391,711.80 : x
  2. Step 2: Convert to fraction form
    616,243.80/925,920.90 = 391,711.80/x
  3. Step 3: Cross multiply
    616,243.80x = 925,920.90 × 391,711.80
  4. Step 4: Simplify right side
    616,243.80x = 362,694,142,396.62
  5. Step 5: Solve for x
    x = 362,694,142,396.62/616,243.80
  6. Step 6: Final answer
    x = 588,556.25

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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.