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Finding the Fourth Proportional to 214,879.76, 322,319.64 and 67,135.76

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Solution

The fourth proportional to 214,879.76, 322,319.64 and 67,135.76 is: 100,703.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,879.76 : 322,319.64 = 67,135.76 : x
  2. Step 2: Convert to fraction form
    214,879.76/322,319.64 = 67,135.76/x
  3. Step 3: Cross multiply
    214,879.76x = 322,319.64 × 67,135.76
  4. Step 4: Simplify right side
    214,879.76x = 21,639,173,994.33
  5. Step 5: Solve for x
    x = 21,639,173,994.33/214,879.76
  6. Step 6: Final answer
    x = 100,703.64

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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.