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Finding the Fourth Proportional to 324,062.80, 486,094.20 and 272,741.20

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Solution

The fourth proportional to 324,062.80, 486,094.20 and 272,741.20 is: 409,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,062.80 : 486,094.20 = 272,741.20 : x
  2. Step 2: Convert to fraction form
    324,062.80/486,094.20 = 272,741.20/x
  3. Step 3: Cross multiply
    324,062.80x = 486,094.20 × 272,741.20
  4. Step 4: Simplify right side
    324,062.80x = 132,577,915,421.04
  5. Step 5: Solve for x
    x = 132,577,915,421.04/324,062.80
  6. Step 6: Final answer
    x = 409,111.80

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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.