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Finding the Fourth Proportional to 56,811.68, 85,217.75 and 17,368.73

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Solution

The fourth proportional to 56,811.68, 85,217.75 and 17,368.73 is: 26,053.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.68 : 85,217.75 = 17,368.73 : x
  2. Step 2: Convert to fraction form
    56,811.68/85,217.75 = 17,368.73/x
  3. Step 3: Cross multiply
    56,811.68x = 85,217.75 × 17,368.73
  4. Step 4: Simplify right side
    56,811.68x = 1,480,123,578.03
  5. Step 5: Solve for x
    x = 1,480,123,578.03/56,811.68
  6. Step 6: Final answer
    x = 26,053.16

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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.