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Finding the Fourth Proportional to 99,356.41, 137,042.44 and 67,469.95

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Solution

The fourth proportional to 99,356.41, 137,042.44 and 67,469.95 is: 93,061.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,356.41 : 137,042.44 = 67,469.95 : x
  2. Step 2: Convert to fraction form
    99,356.41/137,042.44 = 67,469.95/x
  3. Step 3: Cross multiply
    99,356.41x = 137,042.44 × 67,469.95
  4. Step 4: Simplify right side
    99,356.41x = 9,246,246,574.68
  5. Step 5: Solve for x
    x = 9,246,246,574.68/99,356.41
  6. Step 6: Final answer
    x = 93,061.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.