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Finding the Fourth Proportional to 247,073.77, 340,998.36 and 156,438.14

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Solution

The fourth proportional to 247,073.77, 340,998.36 and 156,438.14 is: 215,907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,073.77 : 340,998.36 = 156,438.14 : x
  2. Step 2: Convert to fraction form
    247,073.77/340,998.36 = 156,438.14/x
  3. Step 3: Cross multiply
    247,073.77x = 340,998.36 × 156,438.14
  4. Step 4: Simplify right side
    247,073.77x = 53,345,149,181.45
  5. Step 5: Solve for x
    x = 53,345,149,181.45/247,073.77
  6. Step 6: Final answer
    x = 215,907.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.