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Finding the Fourth Proportional to 469,611.10, 704,805.45 and 217,279.90

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Solution

The fourth proportional to 469,611.10, 704,805.45 and 217,279.90 is: 326,099.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,611.10 : 704,805.45 = 217,279.90 : x
  2. Step 2: Convert to fraction form
    469,611.10/704,805.45 = 217,279.90/x
  3. Step 3: Cross multiply
    469,611.10x = 704,805.45 × 217,279.90
  4. Step 4: Simplify right side
    469,611.10x = 153,140,057,695.46
  5. Step 5: Solve for x
    x = 153,140,057,695.46/469,611.10
  6. Step 6: Final answer
    x = 326,099.74

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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.