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Finding the Fourth Proportional to 111,496.55, 153,865.40 and 63,750.92

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Solution

The fourth proportional to 111,496.55, 153,865.40 and 63,750.92 is: 87,976.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,496.55 : 153,865.40 = 63,750.92 : x
  2. Step 2: Convert to fraction form
    111,496.55/153,865.40 = 63,750.92/x
  3. Step 3: Cross multiply
    111,496.55x = 153,865.40 × 63,750.92
  4. Step 4: Simplify right side
    111,496.55x = 9,809,059,718.09
  5. Step 5: Solve for x
    x = 9,809,059,718.09/111,496.55
  6. Step 6: Final answer
    x = 87,976.36

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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.