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Finding the Fourth Proportional to 57,111.66, 85,671.81 and 17,672.76

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Solution

The fourth proportional to 57,111.66, 85,671.81 and 17,672.76 is: 26,510.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,111.66 : 85,671.81 = 17,672.76 : x
  2. Step 2: Convert to fraction form
    57,111.66/85,671.81 = 17,672.76/x
  3. Step 3: Cross multiply
    57,111.66x = 85,671.81 × 17,672.76
  4. Step 4: Simplify right side
    57,111.66x = 1,514,057,336.90
  5. Step 5: Solve for x
    x = 1,514,057,336.90/57,111.66
  6. Step 6: Final answer
    x = 26,510.48

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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.