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Finding the Fourth Proportional to 131,492.82, 181,459.62 and 71,063.49

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Solution

The fourth proportional to 131,492.82, 181,459.62 and 71,063.49 is: 98,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,492.82 : 181,459.62 = 71,063.49 : x
  2. Step 2: Convert to fraction form
    131,492.82/181,459.62 = 71,063.49/x
  3. Step 3: Cross multiply
    131,492.82x = 181,459.62 × 71,063.49
  4. Step 4: Simplify right side
    131,492.82x = 12,895,153,891.27
  5. Step 5: Solve for x
    x = 12,895,153,891.27/131,492.82
  6. Step 6: Final answer
    x = 98,067.36

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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.