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Finding the Fourth Proportional to 92,252, 138,378 and 29,922.50

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Solution

The fourth proportional to 92,252, 138,378 and 29,922.50 is: 44,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,252 : 138,378 = 29,922.50 : x
  2. Step 2: Convert to fraction form
    92,252/138,378 = 29,922.50/x
  3. Step 3: Cross multiply
    92,252x = 138,378 × 29,922.50
  4. Step 4: Simplify right side
    92,252x = 4,140,615,705
  5. Step 5: Solve for x
    x = 4,140,615,705/92,252
  6. Step 6: Final answer
    x = 44,883.75

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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.