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Finding the Fourth Proportional to 56,561.76, 84,842.87 and 19,122.03

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Solution

The fourth proportional to 56,561.76, 84,842.87 and 19,122.03 is: 28,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,561.76 : 84,842.87 = 19,122.03 : x
  2. Step 2: Convert to fraction form
    56,561.76/84,842.87 = 19,122.03/x
  3. Step 3: Cross multiply
    56,561.76x = 84,842.87 × 19,122.03
  4. Step 4: Simplify right side
    56,561.76x = 1,622,367,809.82
  5. Step 5: Solve for x
    x = 1,622,367,809.82/56,561.76
  6. Step 6: Final answer
    x = 28,683.12

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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.