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Finding the Fourth Proportional to 461,722.80, 692,616.60 and 262,138.80

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Solution

The fourth proportional to 461,722.80, 692,616.60 and 262,138.80 is: 393,226.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,722.80 : 692,616.60 = 262,138.80 : x
  2. Step 2: Convert to fraction form
    461,722.80/692,616.60 = 262,138.80/x
  3. Step 3: Cross multiply
    461,722.80x = 692,616.60 × 262,138.80
  4. Step 4: Simplify right side
    461,722.80x = 181,561,684,384.08
  5. Step 5: Solve for x
    x = 181,561,684,384.08/461,722.80
  6. Step 6: Final answer
    x = 393,226.59

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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.