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Finding the Fourth Proportional to 10,362.70, 15,545.10 and 3,340.90

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Solution

The fourth proportional to 10,362.70, 15,545.10 and 3,340.90 is: 5,011.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,362.70 : 15,545.10 = 3,340.90 : x
  2. Step 2: Convert to fraction form
    10,362.70/15,545.10 = 3,340.90/x
  3. Step 3: Cross multiply
    10,362.70x = 15,545.10 × 3,340.90
  4. Step 4: Simplify right side
    10,362.70x = 51,934,624.59
  5. Step 5: Solve for x
    x = 51,934,624.59/10,362.70
  6. Step 6: Final answer
    x = 5,011.69

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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.