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Finding the Fourth Proportional to 70,865.52, 97,696.35 and 50,687.16

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Solution

The fourth proportional to 70,865.52, 97,696.35 and 50,687.16 is: 69,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,865.52 : 97,696.35 = 50,687.16 : x
  2. Step 2: Convert to fraction form
    70,865.52/97,696.35 = 50,687.16/x
  3. Step 3: Cross multiply
    70,865.52x = 97,696.35 × 50,687.16
  4. Step 4: Simplify right side
    70,865.52x = 4,951,950,523.87
  5. Step 5: Solve for x
    x = 4,951,950,523.87/70,865.52
  6. Step 6: Final answer
    x = 69,878.14

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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.