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Finding the Fourth Proportional to 627,712.95, 866,233.65 and 341,240.25

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Solution

The fourth proportional to 627,712.95, 866,233.65 and 341,240.25 is: 470,905.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,712.95 : 866,233.65 = 341,240.25 : x
  2. Step 2: Convert to fraction form
    627,712.95/866,233.65 = 341,240.25/x
  3. Step 3: Cross multiply
    627,712.95x = 866,233.65 × 341,240.25
  4. Step 4: Simplify right side
    627,712.95x = 295,593,787,284.41
  5. Step 5: Solve for x
    x = 295,593,787,284.41/627,712.95
  6. Step 6: Final answer
    x = 470,905.99

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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.