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Finding the Fourth Proportional to 78,506.76, 108,342.18 and 44,979.24

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Solution

The fourth proportional to 78,506.76, 108,342.18 and 44,979.24 is: 62,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,506.76 : 108,342.18 = 44,979.24 : x
  2. Step 2: Convert to fraction form
    78,506.76/108,342.18 = 44,979.24/x
  3. Step 3: Cross multiply
    78,506.76x = 108,342.18 × 44,979.24
  4. Step 4: Simplify right side
    78,506.76x = 4,873,148,916.34
  5. Step 5: Solve for x
    x = 4,873,148,916.34/78,506.76
  6. Step 6: Final answer
    x = 62,072.98

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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.