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Finding the Fourth Proportional to 460,978.80, 691,468.20 and 367,666.80

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Solution

The fourth proportional to 460,978.80, 691,468.20 and 367,666.80 is: 551,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,978.80 : 691,468.20 = 367,666.80 : x
  2. Step 2: Convert to fraction form
    460,978.80/691,468.20 = 367,666.80/x
  3. Step 3: Cross multiply
    460,978.80x = 691,468.20 × 367,666.80
  4. Step 4: Simplify right side
    460,978.80x = 254,229,900,395.76
  5. Step 5: Solve for x
    x = 254,229,900,395.76/460,978.80
  6. Step 6: Final answer
    x = 551,500.20

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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.