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Finding the Fourth Proportional to 132,790.95, 198,894.83 and 115,294.95

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Solution

The fourth proportional to 132,790.95, 198,894.83 and 115,294.95 is: 172,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,790.95 : 198,894.83 = 115,294.95 : x
  2. Step 2: Convert to fraction form
    132,790.95/198,894.83 = 115,294.95/x
  3. Step 3: Cross multiply
    132,790.95x = 198,894.83 × 115,294.95
  4. Step 4: Simplify right side
    132,790.95x = 22,931,568,903.63
  5. Step 5: Solve for x
    x = 22,931,568,903.63/132,790.95
  6. Step 6: Final answer
    x = 172,689.25

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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.