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Finding the Fourth Proportional to 158,926.54, 238,384.40 and 74,639.56

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Solution

The fourth proportional to 158,926.54, 238,384.40 and 74,639.56 is: 111,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,926.54 : 238,384.40 = 74,639.56 : x
  2. Step 2: Convert to fraction form
    158,926.54/238,384.40 = 74,639.56/x
  3. Step 3: Cross multiply
    158,926.54x = 238,384.40 × 74,639.56
  4. Step 4: Simplify right side
    158,926.54x = 17,792,906,726.86
  5. Step 5: Solve for x
    x = 17,792,906,726.86/158,926.54
  6. Step 6: Final answer
    x = 111,956.80

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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.