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Finding the Fourth Proportional to 125,704.61, 188,556.91 and 88,431.47

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Solution

The fourth proportional to 125,704.61, 188,556.91 and 88,431.47 is: 132,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,704.61 : 188,556.91 = 88,431.47 : x
  2. Step 2: Convert to fraction form
    125,704.61/188,556.91 = 88,431.47/x
  3. Step 3: Cross multiply
    125,704.61x = 188,556.91 × 88,431.47
  4. Step 4: Simplify right side
    125,704.61x = 16,674,364,729.96
  5. Step 5: Solve for x
    x = 16,674,364,729.96/125,704.61
  6. Step 6: Final answer
    x = 132,647.20

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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.