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Finding the Fourth Proportional to 132,065.97, 197,980.56 and 47,806.40

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Solution

The fourth proportional to 132,065.97, 197,980.56 and 47,806.40 is: 71,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,065.97 : 197,980.56 = 47,806.40 : x
  2. Step 2: Convert to fraction form
    132,065.97/197,980.56 = 47,806.40/x
  3. Step 3: Cross multiply
    132,065.97x = 197,980.56 × 47,806.40
  4. Step 4: Simplify right side
    132,065.97x = 9,464,736,853.68
  5. Step 5: Solve for x
    x = 9,464,736,853.68/132,065.97
  6. Step 6: Final answer
    x = 71,666.73

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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.