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Finding the Fourth Proportional to 55,761.62, 83,631.29 and 20,693.07

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Solution

The fourth proportional to 55,761.62, 83,631.29 and 20,693.07 is: 31,035.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,761.62 : 83,631.29 = 20,693.07 : x
  2. Step 2: Convert to fraction form
    55,761.62/83,631.29 = 20,693.07/x
  3. Step 3: Cross multiply
    55,761.62x = 83,631.29 × 20,693.07
  4. Step 4: Simplify right side
    55,761.62x = 1,730,588,034.69
  5. Step 5: Solve for x
    x = 1,730,588,034.69/55,761.62
  6. Step 6: Final answer
    x = 31,035.47

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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.