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Finding the Fourth Proportional to 416,122.60, 623,309.10 and 346,138.60

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Solution

The fourth proportional to 416,122.60, 623,309.10 and 346,138.60 is: 518,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,122.60 : 623,309.10 = 346,138.60 : x
  2. Step 2: Convert to fraction form
    416,122.60/623,309.10 = 346,138.60/x
  3. Step 3: Cross multiply
    416,122.60x = 623,309.10 × 346,138.60
  4. Step 4: Simplify right side
    416,122.60x = 215,751,339,241.26
  5. Step 5: Solve for x
    x = 215,751,339,241.26/416,122.60
  6. Step 6: Final answer
    x = 518,480.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.