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Finding the Fourth Proportional to 158,622, 237,921.86 and 74,400.64

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Solution

The fourth proportional to 158,622, 237,921.86 and 74,400.64 is: 111,595.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,622 : 237,921.86 = 74,400.64 : x
  2. Step 2: Convert to fraction form
    158,622/237,921.86 = 74,400.64/x
  3. Step 3: Cross multiply
    158,622x = 237,921.86 × 74,400.64
  4. Step 4: Simplify right side
    158,622x = 17,701,538,653.99
  5. Step 5: Solve for x
    x = 17,701,538,653.99/158,622
  6. Step 6: Final answer
    x = 111,595.73

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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.