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Finding the Fourth Proportional to 99,234.60, 136,943.20 and 53,912.22

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Solution

The fourth proportional to 99,234.60, 136,943.20 and 53,912.22 is: 74,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,234.60 : 136,943.20 = 53,912.22 : x
  2. Step 2: Convert to fraction form
    99,234.60/136,943.20 = 53,912.22/x
  3. Step 3: Cross multiply
    99,234.60x = 136,943.20 × 53,912.22
  4. Step 4: Simplify right side
    99,234.60x = 7,382,911,925.90
  5. Step 5: Solve for x
    x = 7,382,911,925.90/99,234.60
  6. Step 6: Final answer
    x = 74,398.57

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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.