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Finding the Fourth Proportional to 111,461.28, 153,795.12 and 63,704.48

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Solution

The fourth proportional to 111,461.28, 153,795.12 and 63,704.48 is: 87,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,461.28 : 153,795.12 = 63,704.48 : x
  2. Step 2: Convert to fraction form
    111,461.28/153,795.12 = 63,704.48/x
  3. Step 3: Cross multiply
    111,461.28x = 153,795.12 × 63,704.48
  4. Step 4: Simplify right side
    111,461.28x = 9,797,438,146.14
  5. Step 5: Solve for x
    x = 9,797,438,146.14/111,461.28
  6. Step 6: Final answer
    x = 87,899.92

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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.