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Finding the Fourth Proportional to 56,615.94, 84,919.05 and 19,175.22

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Solution

The fourth proportional to 56,615.94, 84,919.05 and 19,175.22 is: 28,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,615.94 : 84,919.05 = 19,175.22 : x
  2. Step 2: Convert to fraction form
    56,615.94/84,919.05 = 19,175.22/x
  3. Step 3: Cross multiply
    56,615.94x = 84,919.05 × 19,175.22
  4. Step 4: Simplify right side
    56,615.94x = 1,628,341,465.94
  5. Step 5: Solve for x
    x = 1,628,341,465.94/56,615.94
  6. Step 6: Final answer
    x = 28,761.18

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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.