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Finding the Fourth Proportional to 25,430.74, 38,147.79 and 8,792.38

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Solution

The fourth proportional to 25,430.74, 38,147.79 and 8,792.38 is: 13,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.74 : 38,147.79 = 8,792.38 : x
  2. Step 2: Convert to fraction form
    25,430.74/38,147.79 = 8,792.38/x
  3. Step 3: Cross multiply
    25,430.74x = 38,147.79 × 8,792.38
  4. Step 4: Simplify right side
    25,430.74x = 335,409,865.84
  5. Step 5: Solve for x
    x = 335,409,865.84/25,430.74
  6. Step 6: Final answer
    x = 13,189.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.