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Finding the Fourth Proportional to 627,580.40, 866,069.72 and 341,100.40

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Solution

The fourth proportional to 627,580.40, 866,069.72 and 341,100.40 is: 470,723.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,580.40 : 866,069.72 = 341,100.40 : x
  2. Step 2: Convert to fraction form
    627,580.40/866,069.72 = 341,100.40/x
  3. Step 3: Cross multiply
    627,580.40x = 866,069.72 × 341,100.40
  4. Step 4: Simplify right side
    627,580.40x = 295,416,727,919.89
  5. Step 5: Solve for x
    x = 295,416,727,919.89/627,580.40
  6. Step 6: Final answer
    x = 470,723.32

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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.