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Finding the Fourth Proportional to 338,208.81, 466,503.39 and 217,502.79

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Solution

The fourth proportional to 338,208.81, 466,503.39 and 217,502.79 is: 300,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,208.81 : 466,503.39 = 217,502.79 : x
  2. Step 2: Convert to fraction form
    338,208.81/466,503.39 = 217,502.79/x
  3. Step 3: Cross multiply
    338,208.81x = 466,503.39 × 217,502.79
  4. Step 4: Simplify right side
    338,208.81x = 101,465,788,869.46
  5. Step 5: Solve for x
    x = 101,465,788,869.46/338,208.81
  6. Step 6: Final answer
    x = 300,009.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.