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Finding the Fourth Proportional to 641,782.41, 885,626.05 and 351,338.29

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Solution

The fourth proportional to 641,782.41, 885,626.05 and 351,338.29 is: 484,828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,782.41 : 885,626.05 = 351,338.29 : x
  2. Step 2: Convert to fraction form
    641,782.41/885,626.05 = 351,338.29/x
  3. Step 3: Cross multiply
    641,782.41x = 885,626.05 × 351,338.29
  4. Step 4: Simplify right side
    641,782.41x = 311,154,340,229.76
  5. Step 5: Solve for x
    x = 311,154,340,229.76/641,782.41
  6. Step 6: Final answer
    x = 484,828.41

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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.