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Finding the Fourth Proportional to 17,590.68, 26,390.52 and 12,965.76

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Solution

The fourth proportional to 17,590.68, 26,390.52 and 12,965.76 is: 19,451.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,590.68 : 26,390.52 = 12,965.76 : x
  2. Step 2: Convert to fraction form
    17,590.68/26,390.52 = 12,965.76/x
  3. Step 3: Cross multiply
    17,590.68x = 26,390.52 × 12,965.76
  4. Step 4: Simplify right side
    17,590.68x = 342,173,148.60
  5. Step 5: Solve for x
    x = 342,173,148.60/17,590.68
  6. Step 6: Final answer
    x = 19,451.96

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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.