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Finding the Fourth Proportional to 72,898.42, 109,158.46 and 62,435.70

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Solution

The fourth proportional to 72,898.42, 109,158.46 and 62,435.70 is: 93,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,898.42 : 109,158.46 = 62,435.70 : x
  2. Step 2: Convert to fraction form
    72,898.42/109,158.46 = 62,435.70/x
  3. Step 3: Cross multiply
    72,898.42x = 109,158.46 × 62,435.70
  4. Step 4: Simplify right side
    72,898.42x = 6,815,384,861.02
  5. Step 5: Solve for x
    x = 6,815,384,861.02/72,898.42
  6. Step 6: Final answer
    x = 93,491.53

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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.