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Finding the Fourth Proportional to 483,946.80, 725,920.20 and 146,986.80

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Solution

The fourth proportional to 483,946.80, 725,920.20 and 146,986.80 is: 220,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,946.80 : 725,920.20 = 146,986.80 : x
  2. Step 2: Convert to fraction form
    483,946.80/725,920.20 = 146,986.80/x
  3. Step 3: Cross multiply
    483,946.80x = 725,920.20 × 146,986.80
  4. Step 4: Simplify right side
    483,946.80x = 106,700,687,253.36
  5. Step 5: Solve for x
    x = 106,700,687,253.36/483,946.80
  6. Step 6: Final answer
    x = 220,480.20

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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.