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Finding the Fourth Proportional to 210,369.76, 315,652.96 and 92,025.76

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Solution

The fourth proportional to 210,369.76, 315,652.96 and 92,025.76 is: 138,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,369.76 : 315,652.96 = 92,025.76 : x
  2. Step 2: Convert to fraction form
    210,369.76/315,652.96 = 92,025.76/x
  3. Step 3: Cross multiply
    210,369.76x = 315,652.96 × 92,025.76
  4. Step 4: Simplify right side
    210,369.76x = 29,048,203,540.25
  5. Step 5: Solve for x
    x = 29,048,203,540.25/210,369.76
  6. Step 6: Final answer
    x = 138,081.65

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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.