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Finding the Fourth Proportional to 99,062.67, 136,603.72 and 84,769.81

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Solution

The fourth proportional to 99,062.67, 136,603.72 and 84,769.81 is: 116,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,062.67 : 136,603.72 = 84,769.81 : x
  2. Step 2: Convert to fraction form
    99,062.67/136,603.72 = 84,769.81/x
  3. Step 3: Cross multiply
    99,062.67x = 136,603.72 × 84,769.81
  4. Step 4: Simplify right side
    99,062.67x = 11,579,871,389.69
  5. Step 5: Solve for x
    x = 11,579,871,389.69/99,062.67
  6. Step 6: Final answer
    x = 116,894.40

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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.