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Finding the Fourth Proportional to 86,297.90, 119,127.96 and 58,020

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Solution

The fourth proportional to 86,297.90, 119,127.96 and 58,020 is: 80,092.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,297.90 : 119,127.96 = 58,020 : x
  2. Step 2: Convert to fraction form
    86,297.90/119,127.96 = 58,020/x
  3. Step 3: Cross multiply
    86,297.90x = 119,127.96 × 58,020
  4. Step 4: Simplify right side
    86,297.90x = 6,911,804,239.20
  5. Step 5: Solve for x
    x = 6,911,804,239.20/86,297.90
  6. Step 6: Final answer
    x = 80,092.38

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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.