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Finding the Fourth Proportional to 78,458.49, 108,272.30 and 44,473.41

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Solution

The fourth proportional to 78,458.49, 108,272.30 and 44,473.41 is: 61,373.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,458.49 : 108,272.30 = 44,473.41 : x
  2. Step 2: Convert to fraction form
    78,458.49/108,272.30 = 44,473.41/x
  3. Step 3: Cross multiply
    78,458.49x = 108,272.30 × 44,473.41
  4. Step 4: Simplify right side
    78,458.49x = 4,815,238,167.18
  5. Step 5: Solve for x
    x = 4,815,238,167.18/78,458.49
  6. Step 6: Final answer
    x = 61,373.07

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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.