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Finding the Fourth Proportional to 211,682.85, 317,491.44 and 61,887.93

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Solution

The fourth proportional to 211,682.85, 317,491.44 and 61,887.93 is: 92,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,682.85 : 317,491.44 = 61,887.93 : x
  2. Step 2: Convert to fraction form
    211,682.85/317,491.44 = 61,887.93/x
  3. Step 3: Cross multiply
    211,682.85x = 317,491.44 × 61,887.93
  4. Step 4: Simplify right side
    211,682.85x = 19,648,888,014.32
  5. Step 5: Solve for x
    x = 19,648,888,014.32/211,682.85
  6. Step 6: Final answer
    x = 92,822.30

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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.