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Finding the Fourth Proportional to 56,502.42, 84,720.81 and 21,422.94

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Solution

The fourth proportional to 56,502.42, 84,720.81 and 21,422.94 is: 32,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,502.42 : 84,720.81 = 21,422.94 : x
  2. Step 2: Convert to fraction form
    56,502.42/84,720.81 = 21,422.94/x
  3. Step 3: Cross multiply
    56,502.42x = 84,720.81 × 21,422.94
  4. Step 4: Simplify right side
    56,502.42x = 1,814,968,829.38
  5. Step 5: Solve for x
    x = 1,814,968,829.38/56,502.42
  6. Step 6: Final answer
    x = 32,121.97

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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.