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Finding the Fourth Proportional to 483,215.20, 724,822.80 and 404,418.40

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Solution

The fourth proportional to 483,215.20, 724,822.80 and 404,418.40 is: 606,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,215.20 : 724,822.80 = 404,418.40 : x
  2. Step 2: Convert to fraction form
    483,215.20/724,822.80 = 404,418.40/x
  3. Step 3: Cross multiply
    483,215.20x = 724,822.80 × 404,418.40
  4. Step 4: Simplify right side
    483,215.20x = 293,131,677,059.52
  5. Step 5: Solve for x
    x = 293,131,677,059.52/483,215.20
  6. Step 6: Final answer
    x = 606,627.60

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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.