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Finding the Fourth Proportional to 211,297.71, 316,998.56 and 61,539.41

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Solution

The fourth proportional to 211,297.71, 316,998.56 and 61,539.41 is: 92,324.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,297.71 : 316,998.56 = 61,539.41 : x
  2. Step 2: Convert to fraction form
    211,297.71/316,998.56 = 61,539.41/x
  3. Step 3: Cross multiply
    211,297.71x = 316,998.56 × 61,539.41
  4. Step 4: Simplify right side
    211,297.71x = 19,507,905,299.59
  5. Step 5: Solve for x
    x = 19,507,905,299.59/211,297.71
  6. Step 6: Final answer
    x = 92,324.26

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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.