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Finding the Fourth Proportional to 140,794.05, 211,218.64 and 61,908.05

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Solution

The fourth proportional to 140,794.05, 211,218.64 and 61,908.05 is: 92,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,794.05 : 211,218.64 = 61,908.05 : x
  2. Step 2: Convert to fraction form
    140,794.05/211,218.64 = 61,908.05/x
  3. Step 3: Cross multiply
    140,794.05x = 211,218.64 × 61,908.05
  4. Step 4: Simplify right side
    140,794.05x = 13,076,133,311.22
  5. Step 5: Solve for x
    x = 13,076,133,311.22/140,794.05
  6. Step 6: Final answer
    x = 92,874.19

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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.