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Finding the Fourth Proportional to 88,085.40, 132,078.57 and 28,916.11

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Solution

The fourth proportional to 88,085.40, 132,078.57 and 28,916.11 is: 43,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,085.40 : 132,078.57 = 28,916.11 : x
  2. Step 2: Convert to fraction form
    88,085.40/132,078.57 = 28,916.11/x
  3. Step 3: Cross multiply
    88,085.40x = 132,078.57 × 28,916.11
  4. Step 4: Simplify right side
    88,085.40x = 3,819,198,458.76
  5. Step 5: Solve for x
    x = 3,819,198,458.76/88,085.40
  6. Step 6: Final answer
    x = 43,357.91

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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.