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Finding the Fourth Proportional to 62,873.72, 86,765.28 and 34,578.80

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Solution

The fourth proportional to 62,873.72, 86,765.28 and 34,578.80 is: 47,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,873.72 : 86,765.28 = 34,578.80 : x
  2. Step 2: Convert to fraction form
    62,873.72/86,765.28 = 34,578.80/x
  3. Step 3: Cross multiply
    62,873.72x = 86,765.28 × 34,578.80
  4. Step 4: Simplify right side
    62,873.72x = 3,000,239,264.06
  5. Step 5: Solve for x
    x = 3,000,239,264.06/62,873.72
  6. Step 6: Final answer
    x = 47,718.49

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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.