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Finding the Fourth Proportional to 10,821.70, 16,232.55 and 9,363.70

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Solution

The fourth proportional to 10,821.70, 16,232.55 and 9,363.70 is: 14,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.70 : 16,232.55 = 9,363.70 : x
  2. Step 2: Convert to fraction form
    10,821.70/16,232.55 = 9,363.70/x
  3. Step 3: Cross multiply
    10,821.70x = 16,232.55 × 9,363.70
  4. Step 4: Simplify right side
    10,821.70x = 151,996,728.44
  5. Step 5: Solve for x
    x = 151,996,728.44/10,821.70
  6. Step 6: Final answer
    x = 14,045.55

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1.5x scale

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.