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Finding the Fourth Proportional to 92,399.90, 138,599.78 and 22,279.18

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Solution

The fourth proportional to 92,399.90, 138,599.78 and 22,279.18 is: 33,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,399.90 : 138,599.78 = 22,279.18 : x
  2. Step 2: Convert to fraction form
    92,399.90/138,599.78 = 22,279.18/x
  3. Step 3: Cross multiply
    92,399.90x = 138,599.78 × 22,279.18
  4. Step 4: Simplify right side
    92,399.90x = 3,087,889,446.58
  5. Step 5: Solve for x
    x = 3,087,889,446.58/92,399.90
  6. Step 6: Final answer
    x = 33,418.75

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1.5x scale

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.