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Finding the Fourth Proportional to 474,367.59, 711,785.17 and 221,665.51

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Solution

The fourth proportional to 474,367.59, 711,785.17 and 221,665.51 is: 332,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,367.59 : 711,785.17 = 221,665.51 : x
  2. Step 2: Convert to fraction form
    474,367.59/711,785.17 = 221,665.51/x
  3. Step 3: Cross multiply
    474,367.59x = 711,785.17 × 221,665.51
  4. Step 4: Simplify right side
    474,367.59x = 157,778,223,885.30
  5. Step 5: Solve for x
    x = 157,778,223,885.30/474,367.59
  6. Step 6: Final answer
    x = 332,607.51

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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.