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Finding the Fourth Proportional to 483,686.20, 725,529.30 and 424,637.20

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Solution

The fourth proportional to 483,686.20, 725,529.30 and 424,637.20 is: 636,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,686.20 : 725,529.30 = 424,637.20 : x
  2. Step 2: Convert to fraction form
    483,686.20/725,529.30 = 424,637.20/x
  3. Step 3: Cross multiply
    483,686.20x = 725,529.30 × 424,637.20
  4. Step 4: Simplify right side
    483,686.20x = 308,086,730,469.96
  5. Step 5: Solve for x
    x = 308,086,730,469.96/483,686.20
  6. Step 6: Final answer
    x = 636,955.80

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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.