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Finding the Fourth Proportional to 483,947.80, 725,921.70 and 146,987.80

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Solution

The fourth proportional to 483,947.80, 725,921.70 and 146,987.80 is: 220,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,947.80 : 725,921.70 = 146,987.80 : x
  2. Step 2: Convert to fraction form
    483,947.80/725,921.70 = 146,987.80/x
  3. Step 3: Cross multiply
    483,947.80x = 725,921.70 × 146,987.80
  4. Step 4: Simplify right side
    483,947.80x = 106,701,633,655.26
  5. Step 5: Solve for x
    x = 106,701,633,655.26/483,947.80
  6. Step 6: Final answer
    x = 220,481.70

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Double scale
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Similar ratio
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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.