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Finding the Fourth Proportional to 162,617.52, 243,918.96 and 67,808.64

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Solution

The fourth proportional to 162,617.52, 243,918.96 and 67,808.64 is: 101,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,617.52 : 243,918.96 = 67,808.64 : x
  2. Step 2: Convert to fraction form
    162,617.52/243,918.96 = 67,808.64/x
  3. Step 3: Cross multiply
    162,617.52x = 243,918.96 × 67,808.64
  4. Step 4: Simplify right side
    162,617.52x = 16,539,812,947.81
  5. Step 5: Solve for x
    x = 16,539,812,947.81/162,617.52
  6. Step 6: Final answer
    x = 101,709.91

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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.