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Finding the Fourth Proportional to 361,884.80, 542,827.20 and 325,143.20

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Solution

The fourth proportional to 361,884.80, 542,827.20 and 325,143.20 is: 487,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,884.80 : 542,827.20 = 325,143.20 : x
  2. Step 2: Convert to fraction form
    361,884.80/542,827.20 = 325,143.20/x
  3. Step 3: Cross multiply
    361,884.80x = 542,827.20 × 325,143.20
  4. Step 4: Simplify right side
    361,884.80x = 176,496,572,855.04
  5. Step 5: Solve for x
    x = 176,496,572,855.04/361,884.80
  6. Step 6: Final answer
    x = 487,714.80

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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.