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Finding the Fourth Proportional to 99,093.51, 136,691.85 and 63,243.11

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Solution

The fourth proportional to 99,093.51, 136,691.85 and 63,243.11 is: 87,239.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,093.51 : 136,691.85 = 63,243.11 : x
  2. Step 2: Convert to fraction form
    99,093.51/136,691.85 = 63,243.11/x
  3. Step 3: Cross multiply
    99,093.51x = 136,691.85 × 63,243.11
  4. Step 4: Simplify right side
    99,093.51x = 8,644,818,284.54
  5. Step 5: Solve for x
    x = 8,644,818,284.54/99,093.51
  6. Step 6: Final answer
    x = 87,239.00

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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.