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Finding the Fourth Proportional to 47,887.84, 71,831.89 and 47,818.64

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Solution

The fourth proportional to 47,887.84, 71,831.89 and 47,818.64 is: 71,728.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,887.84 : 71,831.89 = 47,818.64 : x
  2. Step 2: Convert to fraction form
    47,887.84/71,831.89 = 47,818.64/x
  3. Step 3: Cross multiply
    47,887.84x = 71,831.89 × 47,818.64
  4. Step 4: Simplify right side
    47,887.84x = 3,434,903,288.43
  5. Step 5: Solve for x
    x = 3,434,903,288.43/47,887.84
  6. Step 6: Final answer
    x = 71,728.09

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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.