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Finding the Fourth Proportional to 140,910.60, 211,346.70 and 42,414.60

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Solution

The fourth proportional to 140,910.60, 211,346.70 and 42,414.60 is: 63,616.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,910.60 : 211,346.70 = 42,414.60 : x
  2. Step 2: Convert to fraction form
    140,910.60/211,346.70 = 42,414.60/x
  3. Step 3: Cross multiply
    140,910.60x = 211,346.70 × 42,414.60
  4. Step 4: Simplify right side
    140,910.60x = 8,964,185,741.82
  5. Step 5: Solve for x
    x = 8,964,185,741.82/140,910.60
  6. Step 6: Final answer
    x = 63,616.12

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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.