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Finding the Fourth Proportional to 38,584.74, 57,888.07 and 12,291.51

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Solution

The fourth proportional to 38,584.74, 57,888.07 and 12,291.51 is: 18,440.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,584.74 : 57,888.07 = 12,291.51 : x
  2. Step 2: Convert to fraction form
    38,584.74/57,888.07 = 12,291.51/x
  3. Step 3: Cross multiply
    38,584.74x = 57,888.07 × 12,291.51
  4. Step 4: Simplify right side
    38,584.74x = 711,531,729.83
  5. Step 5: Solve for x
    x = 711,531,729.83/38,584.74
  6. Step 6: Final answer
    x = 18,440.75

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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.