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Finding the Fourth Proportional to 108,674.20, 162,914.10 and 71,252.20

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Solution

The fourth proportional to 108,674.20, 162,914.10 and 71,252.20 is: 106,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,674.20 : 162,914.10 = 71,252.20 : x
  2. Step 2: Convert to fraction form
    108,674.20/162,914.10 = 71,252.20/x
  3. Step 3: Cross multiply
    108,674.20x = 162,914.10 × 71,252.20
  4. Step 4: Simplify right side
    108,674.20x = 11,607,988,036.02
  5. Step 5: Solve for x
    x = 11,607,988,036.02/108,674.20
  6. Step 6: Final answer
    x = 106,814.57

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1.5x scale

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.