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Finding the Fourth Proportional to 541,019.20, 811,528.80 and 292,187.20

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Solution

The fourth proportional to 541,019.20, 811,528.80 and 292,187.20 is: 438,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,019.20 : 811,528.80 = 292,187.20 : x
  2. Step 2: Convert to fraction form
    541,019.20/811,528.80 = 292,187.20/x
  3. Step 3: Cross multiply
    541,019.20x = 811,528.80 × 292,187.20
  4. Step 4: Simplify right side
    541,019.20x = 237,118,327,791.36
  5. Step 5: Solve for x
    x = 237,118,327,791.36/541,019.20
  6. Step 6: Final answer
    x = 438,280.80

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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.