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Finding the Fourth Proportional to 323,568.60, 485,275.14 and 165,715.80

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Solution

The fourth proportional to 323,568.60, 485,275.14 and 165,715.80 is: 248,533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,568.60 : 485,275.14 = 165,715.80 : x
  2. Step 2: Convert to fraction form
    323,568.60/485,275.14 = 165,715.80/x
  3. Step 3: Cross multiply
    323,568.60x = 485,275.14 × 165,715.80
  4. Step 4: Simplify right side
    323,568.60x = 80,417,758,045.21
  5. Step 5: Solve for x
    x = 80,417,758,045.21/323,568.60
  6. Step 6: Final answer
    x = 248,533.88

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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.