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Finding the Fourth Proportional to 483,909.60, 725,864.40 and 325,279.20

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Solution

The fourth proportional to 483,909.60, 725,864.40 and 325,279.20 is: 487,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,909.60 : 725,864.40 = 325,279.20 : x
  2. Step 2: Convert to fraction form
    483,909.60/725,864.40 = 325,279.20/x
  3. Step 3: Cross multiply
    483,909.60x = 725,864.40 × 325,279.20
  4. Step 4: Simplify right side
    483,909.60x = 236,108,591,340.48
  5. Step 5: Solve for x
    x = 236,108,591,340.48/483,909.60
  6. Step 6: Final answer
    x = 487,918.80

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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.