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Finding the Fourth Proportional to 484,445.40, 726,149.70 and 218,160.60

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Solution

The fourth proportional to 484,445.40, 726,149.70 and 218,160.60 is: 327,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,445.40 : 726,149.70 = 218,160.60 : x
  2. Step 2: Convert to fraction form
    484,445.40/726,149.70 = 218,160.60/x
  3. Step 3: Cross multiply
    484,445.40x = 726,149.70 × 218,160.60
  4. Step 4: Simplify right side
    484,445.40x = 158,417,254,241.82
  5. Step 5: Solve for x
    x = 158,417,254,241.82/484,445.40
  6. Step 6: Final answer
    x = 327,007.45

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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.