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Finding the Fourth Proportional to 99,063.18, 136,706.72 and 53,741.18

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Solution

The fourth proportional to 99,063.18, 136,706.72 and 53,741.18 is: 74,162.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,063.18 : 136,706.72 = 53,741.18 : x
  2. Step 2: Convert to fraction form
    99,063.18/136,706.72 = 53,741.18/x
  3. Step 3: Cross multiply
    99,063.18x = 136,706.72 × 53,741.18
  4. Step 4: Simplify right side
    99,063.18x = 7,346,780,446.73
  5. Step 5: Solve for x
    x = 7,346,780,446.73/99,063.18
  6. Step 6: Final answer
    x = 74,162.57

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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.