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Finding the Fourth Proportional to 627,452.50, 865,884.60 and 340,971.90

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Solution

The fourth proportional to 627,452.50, 865,884.60 and 340,971.90 is: 470,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,452.50 : 865,884.60 = 340,971.90 : x
  2. Step 2: Convert to fraction form
    627,452.50/865,884.60 = 340,971.90/x
  3. Step 3: Cross multiply
    627,452.50x = 865,884.60 × 340,971.90
  4. Step 4: Simplify right side
    627,452.50x = 295,242,317,242.74
  5. Step 5: Solve for x
    x = 295,242,317,242.74/627,452.50
  6. Step 6: Final answer
    x = 470,541.30

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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.