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Finding the Fourth Proportional to 111,436.44, 153,744.87 and 63,655.95

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Solution

The fourth proportional to 111,436.44, 153,744.87 and 63,655.95 is: 87,823.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,436.44 : 153,744.87 = 63,655.95 : x
  2. Step 2: Convert to fraction form
    111,436.44/153,744.87 = 63,655.95/x
  3. Step 3: Cross multiply
    111,436.44x = 153,744.87 × 63,655.95
  4. Step 4: Simplify right side
    111,436.44x = 9,786,775,757.48
  5. Step 5: Solve for x
    x = 9,786,775,757.48/111,436.44
  6. Step 6: Final answer
    x = 87,823.84

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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.