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Finding the Fourth Proportional to 106,887.60, 160,201.80 and 47,660.40

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Solution

The fourth proportional to 106,887.60, 160,201.80 and 47,660.40 is: 71,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,887.60 : 160,201.80 = 47,660.40 : x
  2. Step 2: Convert to fraction form
    106,887.60/160,201.80 = 47,660.40/x
  3. Step 3: Cross multiply
    106,887.60x = 160,201.80 × 47,660.40
  4. Step 4: Simplify right side
    106,887.60x = 7,635,281,868.72
  5. Step 5: Solve for x
    x = 7,635,281,868.72/106,887.60
  6. Step 6: Final answer
    x = 71,432.81

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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.