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Finding the Fourth Proportional to 111,496.50, 153,884.61 and 63,751.86

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Solution

The fourth proportional to 111,496.50, 153,884.61 and 63,751.86 is: 87,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,496.50 : 153,884.61 = 63,751.86 : x
  2. Step 2: Convert to fraction form
    111,496.50/153,884.61 = 63,751.86/x
  3. Step 3: Cross multiply
    111,496.50x = 153,884.61 × 63,751.86
  4. Step 4: Simplify right side
    111,496.50x = 9,810,430,112.87
  5. Step 5: Solve for x
    x = 9,810,430,112.87/111,496.50
  6. Step 6: Final answer
    x = 87,988.68

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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.