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Finding the Fourth Proportional to 60,691.86, 91,048.71 and 18,571.16

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Solution

The fourth proportional to 60,691.86, 91,048.71 and 18,571.16 is: 27,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,691.86 : 91,048.71 = 18,571.16 : x
  2. Step 2: Convert to fraction form
    60,691.86/91,048.71 = 18,571.16/x
  3. Step 3: Cross multiply
    60,691.86x = 91,048.71 × 18,571.16
  4. Step 4: Simplify right side
    60,691.86x = 1,690,879,705.96
  5. Step 5: Solve for x
    x = 1,690,879,705.96/60,691.86
  6. Step 6: Final answer
    x = 27,860.07

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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.