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Finding the Fourth Proportional to 99,063.67, 136,605.10 and 84,770.81

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Solution

The fourth proportional to 99,063.67, 136,605.10 and 84,770.81 is: 116,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,063.67 : 136,605.10 = 84,770.81 : x
  2. Step 2: Convert to fraction form
    99,063.67/136,605.10 = 84,770.81/x
  3. Step 3: Cross multiply
    99,063.67x = 136,605.10 × 84,770.81
  4. Step 4: Simplify right side
    99,063.67x = 11,580,124,977.13
  5. Step 5: Solve for x
    x = 11,580,124,977.13/99,063.67
  6. Step 6: Final answer
    x = 116,895.78

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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.