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Finding the Fourth Proportional to 111,063.70, 153,263.96 and 62,680.88

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Solution

The fourth proportional to 111,063.70, 153,263.96 and 62,680.88 is: 86,497.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,063.70 : 153,263.96 = 62,680.88 : x
  2. Step 2: Convert to fraction form
    111,063.70/153,263.96 = 62,680.88/x
  3. Step 3: Cross multiply
    111,063.70x = 153,263.96 × 62,680.88
  4. Step 4: Simplify right side
    111,063.70x = 9,606,719,885.08
  5. Step 5: Solve for x
    x = 9,606,719,885.08/111,063.70
  6. Step 6: Final answer
    x = 86,497.39

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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.