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Finding the Fourth Proportional to 172,785.22, 259,199.74 and 67,590.52

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Solution

The fourth proportional to 172,785.22, 259,199.74 and 67,590.52 is: 101,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,785.22 : 259,199.74 = 67,590.52 : x
  2. Step 2: Convert to fraction form
    172,785.22/259,199.74 = 67,590.52/x
  3. Step 3: Cross multiply
    172,785.22x = 259,199.74 × 67,590.52
  4. Step 4: Simplify right side
    172,785.22x = 17,519,444,646.95
  5. Step 5: Solve for x
    x = 17,519,444,646.95/172,785.22
  6. Step 6: Final answer
    x = 101,394.35

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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.