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Finding the Fourth Proportional to 68,831.63, 103,285.05 and 26,713.37

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Solution

The fourth proportional to 68,831.63, 103,285.05 and 26,713.37 is: 40,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,831.63 : 103,285.05 = 26,713.37 : x
  2. Step 2: Convert to fraction form
    68,831.63/103,285.05 = 26,713.37/x
  3. Step 3: Cross multiply
    68,831.63x = 103,285.05 × 26,713.37
  4. Step 4: Simplify right side
    68,831.63x = 2,759,091,756.12
  5. Step 5: Solve for x
    x = 2,759,091,756.12/68,831.63
  6. Step 6: Final answer
    x = 40,084.65

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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.