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Finding the Fourth Proportional to 56,967.71, 85,357.85 and 19,507.13

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Solution

The fourth proportional to 56,967.71, 85,357.85 and 19,507.13 is: 29,228.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,967.71 : 85,357.85 = 19,507.13 : x
  2. Step 2: Convert to fraction form
    56,967.71/85,357.85 = 19,507.13/x
  3. Step 3: Cross multiply
    56,967.71x = 85,357.85 × 19,507.13
  4. Step 4: Simplify right side
    56,967.71x = 1,665,086,581.97
  5. Step 5: Solve for x
    x = 1,665,086,581.97/56,967.71
  6. Step 6: Final answer
    x = 29,228.61

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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.