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Finding the Fourth Proportional to 56,859.70, 85,305.95 and 17,422.62

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Solution

The fourth proportional to 56,859.70, 85,305.95 and 17,422.62 is: 26,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,859.70 : 85,305.95 = 17,422.62 : x
  2. Step 2: Convert to fraction form
    56,859.70/85,305.95 = 17,422.62/x
  3. Step 3: Cross multiply
    56,859.70x = 85,305.95 × 17,422.62
  4. Step 4: Simplify right side
    56,859.70x = 1,486,253,024.34
  5. Step 5: Solve for x
    x = 1,486,253,024.34/56,859.70
  6. Step 6: Final answer
    x = 26,138.95

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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.