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Finding the Fourth Proportional to 140,776.44, 211,195.80 and 77,564.01

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Solution

The fourth proportional to 140,776.44, 211,195.80 and 77,564.01 is: 116,363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,776.44 : 211,195.80 = 77,564.01 : x
  2. Step 2: Convert to fraction form
    140,776.44/211,195.80 = 77,564.01/x
  3. Step 3: Cross multiply
    140,776.44x = 211,195.80 × 77,564.01
  4. Step 4: Simplify right side
    140,776.44x = 16,381,193,143.16
  5. Step 5: Solve for x
    x = 16,381,193,143.16/140,776.44
  6. Step 6: Final answer
    x = 116,363.17

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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.