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Finding the Fourth Proportional to 469,139.63, 704,684.28 and 379,283.90

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Solution

The fourth proportional to 469,139.63, 704,684.28 and 379,283.90 is: 569,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,139.63 : 704,684.28 = 379,283.90 : x
  2. Step 2: Convert to fraction form
    469,139.63/704,684.28 = 379,283.90/x
  3. Step 3: Cross multiply
    469,139.63x = 704,684.28 × 379,283.90
  4. Step 4: Simplify right side
    469,139.63x = 267,275,401,987.09
  5. Step 5: Solve for x
    x = 267,275,401,987.09/469,139.63
  6. Step 6: Final answer
    x = 569,713.97

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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.