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Finding the Fourth Proportional to 140,706.72, 211,108.86 and 61,809.96

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Solution

The fourth proportional to 140,706.72, 211,108.86 and 61,809.96 is: 92,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,706.72 : 211,108.86 = 61,809.96 : x
  2. Step 2: Convert to fraction form
    140,706.72/211,108.86 = 61,809.96/x
  3. Step 3: Cross multiply
    140,706.72x = 211,108.86 × 61,809.96
  4. Step 4: Simplify right side
    140,706.72x = 13,048,630,192.25
  5. Step 5: Solve for x
    x = 13,048,630,192.25/140,706.72
  6. Step 6: Final answer
    x = 92,736.37

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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.