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Finding the Fourth Proportional to 92,908.78, 139,363.80 and 22,788.07

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Solution

The fourth proportional to 92,908.78, 139,363.80 and 22,788.07 is: 34,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,908.78 : 139,363.80 = 22,788.07 : x
  2. Step 2: Convert to fraction form
    92,908.78/139,363.80 = 22,788.07/x
  3. Step 3: Cross multiply
    92,908.78x = 139,363.80 × 22,788.07
  4. Step 4: Simplify right side
    92,908.78x = 3,175,832,029.87
  5. Step 5: Solve for x
    x = 3,175,832,029.87/92,908.78
  6. Step 6: Final answer
    x = 34,182.26

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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.