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Finding the Fourth Proportional to 484,417.40, 726,107.70 and 218,132.60

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Solution

The fourth proportional to 484,417.40, 726,107.70 and 218,132.60 is: 326,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,417.40 : 726,107.70 = 218,132.60 : x
  2. Step 2: Convert to fraction form
    484,417.40/726,107.70 = 218,132.60/x
  3. Step 3: Cross multiply
    484,417.40x = 726,107.70 × 218,132.60
  4. Step 4: Simplify right side
    484,417.40x = 158,387,760,481.02
  5. Step 5: Solve for x
    x = 158,387,760,481.02/484,417.40
  6. Step 6: Final answer
    x = 326,965.47

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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.