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Finding the Fourth Proportional to 627,786.59, 866,306.66 and 352,129.26

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Solution

The fourth proportional to 627,786.59, 866,306.66 and 352,129.26 is: 485,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,786.59 : 866,306.66 = 352,129.26 : x
  2. Step 2: Convert to fraction form
    627,786.59/866,306.66 = 352,129.26/x
  3. Step 3: Cross multiply
    627,786.59x = 866,306.66 × 352,129.26
  4. Step 4: Simplify right side
    627,786.59x = 305,051,923,118.87
  5. Step 5: Solve for x
    x = 305,051,923,118.87/627,786.59
  6. Step 6: Final answer
    x = 485,916.60

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Double scale
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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.