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Finding the Fourth Proportional to 71,521.31, 98,473.50 and 62,992.01

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Solution

The fourth proportional to 71,521.31, 98,473.50 and 62,992.01 is: 86,730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,521.31 : 98,473.50 = 62,992.01 : x
  2. Step 2: Convert to fraction form
    71,521.31/98,473.50 = 62,992.01/x
  3. Step 3: Cross multiply
    71,521.31x = 98,473.50 × 62,992.01
  4. Step 4: Simplify right side
    71,521.31x = 6,203,043,204.37
  5. Step 5: Solve for x
    x = 6,203,043,204.37/71,521.31
  6. Step 6: Final answer
    x = 86,730.01

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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.