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Finding the Fourth Proportional to 361,748.01, 542,699.78 and 121,885.75

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Solution

The fourth proportional to 361,748.01, 542,699.78 and 121,885.75 is: 182,854.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,748.01 : 542,699.78 = 121,885.75 : x
  2. Step 2: Convert to fraction form
    361,748.01/542,699.78 = 121,885.75/x
  3. Step 3: Cross multiply
    361,748.01x = 542,699.78 × 121,885.75
  4. Step 4: Simplify right side
    361,748.01x = 66,147,369,710.14
  5. Step 5: Solve for x
    x = 66,147,369,710.14/361,748.01
  6. Step 6: Final answer
    x = 182,854.83

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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.