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Finding the Fourth Proportional to 56,738.60, 85,107.90 and 15,185.60

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Solution

The fourth proportional to 56,738.60, 85,107.90 and 15,185.60 is: 22,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,738.60 : 85,107.90 = 15,185.60 : x
  2. Step 2: Convert to fraction form
    56,738.60/85,107.90 = 15,185.60/x
  3. Step 3: Cross multiply
    56,738.60x = 85,107.90 × 15,185.60
  4. Step 4: Simplify right side
    56,738.60x = 1,292,414,526.24
  5. Step 5: Solve for x
    x = 1,292,414,526.24/56,738.60
  6. Step 6: Final answer
    x = 22,778.40

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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.