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Finding the Fourth Proportional to 62,983.36, 86,916 and 34,691.68

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Solution

The fourth proportional to 62,983.36, 86,916 and 34,691.68 is: 47,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,983.36 : 86,916 = 34,691.68 : x
  2. Step 2: Convert to fraction form
    62,983.36/86,916 = 34,691.68/x
  3. Step 3: Cross multiply
    62,983.36x = 86,916 × 34,691.68
  4. Step 4: Simplify right side
    62,983.36x = 3,015,262,058.88
  5. Step 5: Solve for x
    x = 3,015,262,058.88/62,983.36
  6. Step 6: Final answer
    x = 47,873.95

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1.5x scale

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.