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Finding the Fourth Proportional to 439,760.79, 606,871.05 and 238,556.79

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Solution

The fourth proportional to 439,760.79, 606,871.05 and 238,556.79 is: 329,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,760.79 : 606,871.05 = 238,556.79 : x
  2. Step 2: Convert to fraction form
    439,760.79/606,871.05 = 238,556.79/x
  3. Step 3: Cross multiply
    439,760.79x = 606,871.05 × 238,556.79
  4. Step 4: Simplify right side
    439,760.79x = 144,773,209,631.93
  5. Step 5: Solve for x
    x = 144,773,209,631.93/439,760.79
  6. Step 6: Final answer
    x = 329,209.00

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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.