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Finding the Fourth Proportional to 99,062.74, 136,603.81 and 84,769.87

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Solution

The fourth proportional to 99,062.74, 136,603.81 and 84,769.87 is: 116,894.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,062.74 : 136,603.81 = 84,769.87 : x
  2. Step 2: Convert to fraction form
    99,062.74/136,603.81 = 84,769.87/x
  3. Step 3: Cross multiply
    99,062.74x = 136,603.81 × 84,769.87
  4. Step 4: Simplify right side
    99,062.74x = 11,579,887,215.20
  5. Step 5: Solve for x
    x = 11,579,887,215.20/99,062.74
  6. Step 6: Final answer
    x = 116,894.48

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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.