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Finding the Fourth Proportional to 10,109.16, 15,163 and 4,488.60

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Solution

The fourth proportional to 10,109.16, 15,163 and 4,488.60 is: 6,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.16 : 15,163 = 4,488.60 : x
  2. Step 2: Convert to fraction form
    10,109.16/15,163 = 4,488.60/x
  3. Step 3: Cross multiply
    10,109.16x = 15,163 × 4,488.60
  4. Step 4: Simplify right side
    10,109.16x = 68,060,641.80
  5. Step 5: Solve for x
    x = 68,060,641.80/10,109.16
  6. Step 6: Final answer
    x = 6,732.57

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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.