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Finding the Fourth Proportional to 68,387.45, 94,390.39 and 44,472.47

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Solution

The fourth proportional to 68,387.45, 94,390.39 and 44,472.47 is: 61,382.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.45 : 94,390.39 = 44,472.47 : x
  2. Step 2: Convert to fraction form
    68,387.45/94,390.39 = 44,472.47/x
  3. Step 3: Cross multiply
    68,387.45x = 94,390.39 × 44,472.47
  4. Step 4: Simplify right side
    68,387.45x = 4,197,774,134.72
  5. Step 5: Solve for x
    x = 4,197,774,134.72/68,387.45
  6. Step 6: Final answer
    x = 61,382.23

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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.