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Finding the Fourth Proportional to 56,761.92, 85,142.88 and 19,322.33

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Solution

The fourth proportional to 56,761.92, 85,142.88 and 19,322.33 is: 28,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,761.92 : 85,142.88 = 19,322.33 : x
  2. Step 2: Convert to fraction form
    56,761.92/85,142.88 = 19,322.33/x
  3. Step 3: Cross multiply
    56,761.92x = 85,142.88 × 19,322.33
  4. Step 4: Simplify right side
    56,761.92x = 1,645,158,398.80
  5. Step 5: Solve for x
    x = 1,645,158,398.80/56,761.92
  6. Step 6: Final answer
    x = 28,983.49

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Similar ratio
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1.5x scale

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.