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Finding the Fourth Proportional to 361,343.07, 542,064.36 and 121,475.58

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Solution

The fourth proportional to 361,343.07, 542,064.36 and 121,475.58 is: 182,230.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,343.07 : 542,064.36 = 121,475.58 : x
  2. Step 2: Convert to fraction form
    361,343.07/542,064.36 = 121,475.58/x
  3. Step 3: Cross multiply
    361,343.07x = 542,064.36 × 121,475.58
  4. Step 4: Simplify right side
    361,343.07x = 65,847,582,528.33
  5. Step 5: Solve for x
    x = 65,847,582,528.33/361,343.07
  6. Step 6: Final answer
    x = 182,230.10

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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.