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Finding the Fourth Proportional to 56,865, 85,293.91 and 22,207.55

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Solution

The fourth proportional to 56,865, 85,293.91 and 22,207.55 is: 33,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,865 : 85,293.91 = 22,207.55 : x
  2. Step 2: Convert to fraction form
    56,865/85,293.91 = 22,207.55/x
  3. Step 3: Cross multiply
    56,865x = 85,293.91 × 22,207.55
  4. Step 4: Simplify right side
    56,865x = 1,894,168,289.03
  5. Step 5: Solve for x
    x = 1,894,168,289.03/56,865
  6. Step 6: Final answer
    x = 33,309.91

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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.