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Finding the Fourth Proportional to 55,417.99, 76,476.92 and 31,544.67

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Solution

The fourth proportional to 55,417.99, 76,476.92 and 31,544.67 is: 43,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,417.99 : 76,476.92 = 31,544.67 : x
  2. Step 2: Convert to fraction form
    55,417.99/76,476.92 = 31,544.67/x
  3. Step 3: Cross multiply
    55,417.99x = 76,476.92 × 31,544.67
  4. Step 4: Simplify right side
    55,417.99x = 2,412,438,991.62
  5. Step 5: Solve for x
    x = 2,412,438,991.62/55,417.99
  6. Step 6: Final answer
    x = 43,531.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.