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Finding the Fourth Proportional to 136,658.44, 205,050.93 and 52,390.42

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Solution

The fourth proportional to 136,658.44, 205,050.93 and 52,390.42 is: 78,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,658.44 : 205,050.93 = 52,390.42 : x
  2. Step 2: Convert to fraction form
    136,658.44/205,050.93 = 52,390.42/x
  3. Step 3: Cross multiply
    136,658.44x = 205,050.93 × 52,390.42
  4. Step 4: Simplify right side
    136,658.44x = 10,742,704,344.09
  5. Step 5: Solve for x
    x = 10,742,704,344.09/136,658.44
  6. Step 6: Final answer
    x = 78,609.89

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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.