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Finding the Fourth Proportional to 111,913.10, 168,064.05 and 59,425.10

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Solution

The fourth proportional to 111,913.10, 168,064.05 and 59,425.10 is: 89,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,913.10 : 168,064.05 = 59,425.10 : x
  2. Step 2: Convert to fraction form
    111,913.10/168,064.05 = 59,425.10/x
  3. Step 3: Cross multiply
    111,913.10x = 168,064.05 × 59,425.10
  4. Step 4: Simplify right side
    111,913.10x = 9,987,222,977.66
  5. Step 5: Solve for x
    x = 9,987,222,977.66/111,913.10
  6. Step 6: Final answer
    x = 89,240.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.