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Finding the Fourth Proportional to 439,734.80, 659,213.40 and 262,053.20

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Solution

The fourth proportional to 439,734.80, 659,213.40 and 262,053.20 is: 392,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,734.80 : 659,213.40 = 262,053.20 : x
  2. Step 2: Convert to fraction form
    439,734.80/659,213.40 = 262,053.20/x
  3. Step 3: Cross multiply
    439,734.80x = 659,213.40 × 262,053.20
  4. Step 4: Simplify right side
    439,734.80x = 172,748,980,952.88
  5. Step 5: Solve for x
    x = 172,748,980,952.88/439,734.80
  6. Step 6: Final answer
    x = 392,848.10

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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.