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Finding the Fourth Proportional to 250,258.88, 375,424.94 and 72,742.83

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Solution

The fourth proportional to 250,258.88, 375,424.94 and 72,742.83 is: 109,124.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,258.88 : 375,424.94 = 72,742.83 : x
  2. Step 2: Convert to fraction form
    250,258.88/375,424.94 = 72,742.83/x
  3. Step 3: Cross multiply
    250,258.88x = 375,424.94 × 72,742.83
  4. Step 4: Simplify right side
    250,258.88x = 27,309,471,362.19
  5. Step 5: Solve for x
    x = 27,309,471,362.19/250,258.88
  6. Step 6: Final answer
    x = 109,124.88

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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.