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Finding the Fourth Proportional to 86,469.98, 129,634.52 and 58,036.26

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Solution

The fourth proportional to 86,469.98, 129,634.52 and 58,036.26 is: 87,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,469.98 : 129,634.52 = 58,036.26 : x
  2. Step 2: Convert to fraction form
    86,469.98/129,634.52 = 58,036.26/x
  3. Step 3: Cross multiply
    86,469.98x = 129,634.52 × 58,036.26
  4. Step 4: Simplify right side
    86,469.98x = 7,523,502,707.70
  5. Step 5: Solve for x
    x = 7,523,502,707.70/86,469.98
  6. Step 6: Final answer
    x = 87,007.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.