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Finding the Fourth Proportional to 641,761.73, 885,596.06 and 351,317.12

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Solution

The fourth proportional to 641,761.73, 885,596.06 and 351,317.12 is: 484,798.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,761.73 : 885,596.06 = 351,317.12 : x
  2. Step 2: Convert to fraction form
    641,761.73/885,596.06 = 351,317.12/x
  3. Step 3: Cross multiply
    641,761.73x = 885,596.06 × 351,317.12
  4. Step 4: Simplify right side
    641,761.73x = 311,125,052,854.57
  5. Step 5: Solve for x
    x = 311,125,052,854.57/641,761.73
  6. Step 6: Final answer
    x = 484,798.39

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.