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Finding the Fourth Proportional to 60,109.47, 90,176.49 and 20,661.45

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Solution

The fourth proportional to 60,109.47, 90,176.49 and 20,661.45 is: 30,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,109.47 : 90,176.49 = 20,661.45 : x
  2. Step 2: Convert to fraction form
    60,109.47/90,176.49 = 20,661.45/x
  3. Step 3: Cross multiply
    60,109.47x = 90,176.49 × 20,661.45
  4. Step 4: Simplify right side
    60,109.47x = 1,863,177,039.31
  5. Step 5: Solve for x
    x = 1,863,177,039.31/60,109.47
  6. Step 6: Final answer
    x = 30,996.40

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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.