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Finding the Fourth Proportional to 551,722.16, 761,725.14 and 361,057.88

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Solution

The fourth proportional to 551,722.16, 761,725.14 and 361,057.88 is: 498,487.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,722.16 : 761,725.14 = 361,057.88 : x
  2. Step 2: Convert to fraction form
    551,722.16/761,725.14 = 361,057.88/x
  3. Step 3: Cross multiply
    551,722.16x = 761,725.14 × 361,057.88
  4. Step 4: Simplify right side
    551,722.16x = 275,026,864,191.10
  5. Step 5: Solve for x
    x = 275,026,864,191.10/551,722.16
  6. Step 6: Final answer
    x = 498,487.98

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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.