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Finding the Fourth Proportional to 10,359.90, 15,523.65 and 8,966.70

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Solution

The fourth proportional to 10,359.90, 15,523.65 and 8,966.70 is: 13,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,359.90 : 15,523.65 = 8,966.70 : x
  2. Step 2: Convert to fraction form
    10,359.90/15,523.65 = 8,966.70/x
  3. Step 3: Cross multiply
    10,359.90x = 15,523.65 × 8,966.70
  4. Step 4: Simplify right side
    10,359.90x = 139,195,912.46
  5. Step 5: Solve for x
    x = 139,195,912.46/10,359.90
  6. Step 6: Final answer
    x = 13,436.03

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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.