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Finding the Fourth Proportional to 262,426.60, 393,691.10 and 112,666.60

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Solution

The fourth proportional to 262,426.60, 393,691.10 and 112,666.60 is: 169,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,426.60 : 393,691.10 = 112,666.60 : x
  2. Step 2: Convert to fraction form
    262,426.60/393,691.10 = 112,666.60/x
  3. Step 3: Cross multiply
    262,426.60x = 393,691.10 × 112,666.60
  4. Step 4: Simplify right side
    262,426.60x = 44,355,837,687.26
  5. Step 5: Solve for x
    x = 44,355,837,687.26/262,426.60
  6. Step 6: Final answer
    x = 169,021.88

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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.