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Finding the Fourth Proportional to 110,901.40, 166,373.70 and 47,721.40

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Solution

The fourth proportional to 110,901.40, 166,373.70 and 47,721.40 is: 71,591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,901.40 : 166,373.70 = 47,721.40 : x
  2. Step 2: Convert to fraction form
    110,901.40/166,373.70 = 47,721.40/x
  3. Step 3: Cross multiply
    110,901.40x = 166,373.70 × 47,721.40
  4. Step 4: Simplify right side
    110,901.40x = 7,939,585,887.18
  5. Step 5: Solve for x
    x = 7,939,585,887.18/110,901.40
  6. Step 6: Final answer
    x = 71,591.39

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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.