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Finding the Fourth Proportional to 78,559.57, 108,414.65 and 44,569.49

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Solution

The fourth proportional to 78,559.57, 108,414.65 and 44,569.49 is: 61,507.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.57 : 108,414.65 = 44,569.49 : x
  2. Step 2: Convert to fraction form
    78,559.57/108,414.65 = 44,569.49/x
  3. Step 3: Cross multiply
    78,559.57x = 108,414.65 × 44,569.49
  4. Step 4: Simplify right side
    78,559.57x = 4,831,985,659.03
  5. Step 5: Solve for x
    x = 4,831,985,659.03/78,559.57
  6. Step 6: Final answer
    x = 61,507.28

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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.