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Finding the Fourth Proportional to 56,931.66, 85,396.50 and 17,487.90

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Solution

The fourth proportional to 56,931.66, 85,396.50 and 17,487.90 is: 26,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.66 : 85,396.50 = 17,487.90 : x
  2. Step 2: Convert to fraction form
    56,931.66/85,396.50 = 17,487.90/x
  3. Step 3: Cross multiply
    56,931.66x = 85,396.50 × 17,487.90
  4. Step 4: Simplify right side
    56,931.66x = 1,493,405,452.35
  5. Step 5: Solve for x
    x = 1,493,405,452.35/56,931.66
  6. Step 6: Final answer
    x = 26,231.55

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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.