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Finding the Fourth Proportional to 132,806.40, 183,272.78 and 73,190.40

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Solution

The fourth proportional to 132,806.40, 183,272.78 and 73,190.40 is: 101,002.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,806.40 : 183,272.78 = 73,190.40 : x
  2. Step 2: Convert to fraction form
    132,806.40/183,272.78 = 73,190.40/x
  3. Step 3: Cross multiply
    132,806.40x = 183,272.78 × 73,190.40
  4. Step 4: Simplify right side
    132,806.40x = 13,413,808,077.31
  5. Step 5: Solve for x
    x = 13,413,808,077.31/132,806.40
  6. Step 6: Final answer
    x = 101,002.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.