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Finding the Fourth Proportional to 519,184.97, 778,859.80 and 219,667.78

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Solution

The fourth proportional to 519,184.97, 778,859.80 and 219,667.78 is: 329,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,184.97 : 778,859.80 = 219,667.78 : x
  2. Step 2: Convert to fraction form
    519,184.97/778,859.80 = 219,667.78/x
  3. Step 3: Cross multiply
    519,184.97x = 778,859.80 × 219,667.78
  4. Step 4: Simplify right side
    519,184.97x = 171,090,404,857.28
  5. Step 5: Solve for x
    x = 171,090,404,857.28/519,184.97
  6. Step 6: Final answer
    x = 329,536.51

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1.5x scale

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.