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Finding the Fourth Proportional to 99,034.68, 136,584.72 and 65,017.11

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Solution

The fourth proportional to 99,034.68, 136,584.72 and 65,017.11 is: 89,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,034.68 : 136,584.72 = 65,017.11 : x
  2. Step 2: Convert to fraction form
    99,034.68/136,584.72 = 65,017.11/x
  3. Step 3: Cross multiply
    99,034.68x = 136,584.72 × 65,017.11
  4. Step 4: Simplify right side
    99,034.68x = 8,880,343,764.56
  5. Step 5: Solve for x
    x = 8,880,343,764.56/99,034.68
  6. Step 6: Final answer
    x = 89,669.03

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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.