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Finding the Fourth Proportional to 78,269.63, 108,012.08 and 44,742.11

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Solution

The fourth proportional to 78,269.63, 108,012.08 and 44,742.11 is: 61,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269.63 : 108,012.08 = 44,742.11 : x
  2. Step 2: Convert to fraction form
    78,269.63/108,012.08 = 44,742.11/x
  3. Step 3: Cross multiply
    78,269.63x = 108,012.08 × 44,742.11
  4. Step 4: Simplify right side
    78,269.63x = 4,832,687,936.48
  5. Step 5: Solve for x
    x = 4,832,687,936.48/78,269.63
  6. Step 6: Final answer
    x = 61,744.10

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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.