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Finding the Fourth Proportional to 60,394.62, 90,569.25 and 20,942.22

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Solution

The fourth proportional to 60,394.62, 90,569.25 and 20,942.22 is: 31,405.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,394.62 : 90,569.25 = 20,942.22 : x
  2. Step 2: Convert to fraction form
    60,394.62/90,569.25 = 20,942.22/x
  3. Step 3: Cross multiply
    60,394.62x = 90,569.25 × 20,942.22
  4. Step 4: Simplify right side
    60,394.62x = 1,896,721,158.74
  5. Step 5: Solve for x
    x = 1,896,721,158.74/60,394.62
  6. Step 6: Final answer
    x = 31,405.47

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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.