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Finding the Fourth Proportional to 60,821.79, 91,222.77 and 21,369.69

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Solution

The fourth proportional to 60,821.79, 91,222.77 and 21,369.69 is: 32,051.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,821.79 : 91,222.77 = 21,369.69 : x
  2. Step 2: Convert to fraction form
    60,821.79/91,222.77 = 21,369.69/x
  3. Step 3: Cross multiply
    60,821.79x = 91,222.77 × 21,369.69
  4. Step 4: Simplify right side
    60,821.79x = 1,949,402,395.98
  5. Step 5: Solve for x
    x = 1,949,402,395.98/60,821.79
  6. Step 6: Final answer
    x = 32,051.05

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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.