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Finding the Fourth Proportional to 55,174.61, 82,762.67 and 15,731.72

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Solution

The fourth proportional to 55,174.61, 82,762.67 and 15,731.72 is: 23,597.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,174.61 : 82,762.67 = 15,731.72 : x
  2. Step 2: Convert to fraction form
    55,174.61/82,762.67 = 15,731.72/x
  3. Step 3: Cross multiply
    55,174.61x = 82,762.67 × 15,731.72
  4. Step 4: Simplify right side
    55,174.61x = 1,301,998,776.41
  5. Step 5: Solve for x
    x = 1,301,998,776.41/55,174.61
  6. Step 6: Final answer
    x = 23,597.79

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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.