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Finding the Fourth Proportional to 36,906.51, 55,352.87 and 9,889.17

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Solution

The fourth proportional to 36,906.51, 55,352.87 and 9,889.17 is: 14,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,906.51 : 55,352.87 = 9,889.17 : x
  2. Step 2: Convert to fraction form
    36,906.51/55,352.87 = 9,889.17/x
  3. Step 3: Cross multiply
    36,906.51x = 55,352.87 × 9,889.17
  4. Step 4: Simplify right side
    36,906.51x = 547,393,615.21
  5. Step 5: Solve for x
    x = 547,393,615.21/36,906.51
  6. Step 6: Final answer
    x = 14,831.90

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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.