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Finding the Fourth Proportional to 89,862.30, 134,793.45 and 61,868.70

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Solution

The fourth proportional to 89,862.30, 134,793.45 and 61,868.70 is: 92,803.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,862.30 : 134,793.45 = 61,868.70 : x
  2. Step 2: Convert to fraction form
    89,862.30/134,793.45 = 61,868.70/x
  3. Step 3: Cross multiply
    89,862.30x = 134,793.45 × 61,868.70
  4. Step 4: Simplify right side
    89,862.30x = 8,339,495,520.02
  5. Step 5: Solve for x
    x = 8,339,495,520.02/89,862.30
  6. Step 6: Final answer
    x = 92,803.05

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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.