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Finding the Fourth Proportional to 185,609.93, 278,449.52 and 85,704.12

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Solution

The fourth proportional to 185,609.93, 278,449.52 and 85,704.12 is: 128,572.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,609.93 : 278,449.52 = 85,704.12 : x
  2. Step 2: Convert to fraction form
    185,609.93/278,449.52 = 85,704.12/x
  3. Step 3: Cross multiply
    185,609.93x = 278,449.52 × 85,704.12
  4. Step 4: Simplify right side
    185,609.93x = 23,864,270,647.50
  5. Step 5: Solve for x
    x = 23,864,270,647.50/185,609.93
  6. Step 6: Final answer
    x = 128,572.17

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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.