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Finding the Fourth Proportional to 211,105.80, 316,679.48 and 61,347.41

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Solution

The fourth proportional to 211,105.80, 316,679.48 and 61,347.41 is: 92,027.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,105.80 : 316,679.48 = 61,347.41 : x
  2. Step 2: Convert to fraction form
    211,105.80/316,679.48 = 61,347.41/x
  3. Step 3: Cross multiply
    211,105.80x = 316,679.48 × 61,347.41
  4. Step 4: Simplify right side
    211,105.80x = 19,427,464,008.01
  5. Step 5: Solve for x
    x = 19,427,464,008.01/211,105.80
  6. Step 6: Final answer
    x = 92,027.14

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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.