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Finding the Fourth Proportional to 364,705.79, 547,129.60 and 140,049.72

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Solution

The fourth proportional to 364,705.79, 547,129.60 and 140,049.72 is: 210,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,705.79 : 547,129.60 = 140,049.72 : x
  2. Step 2: Convert to fraction form
    364,705.79/547,129.60 = 140,049.72/x
  3. Step 3: Cross multiply
    364,705.79x = 547,129.60 × 140,049.72
  4. Step 4: Simplify right side
    364,705.79x = 76,625,346,933.59
  5. Step 5: Solve for x
    x = 76,625,346,933.59/364,705.79
  6. Step 6: Final answer
    x = 210,101.81

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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.