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Finding the Fourth Proportional to 10,369.49, 15,560.69 and 4,213.49

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Solution

The fourth proportional to 10,369.49, 15,560.69 and 4,213.49 is: 6,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.49 : 15,560.69 = 4,213.49 : x
  2. Step 2: Convert to fraction form
    10,369.49/15,560.69 = 4,213.49/x
  3. Step 3: Cross multiply
    10,369.49x = 15,560.69 × 4,213.49
  4. Step 4: Simplify right side
    10,369.49x = 65,564,712.84
  5. Step 5: Solve for x
    x = 65,564,712.84/10,369.49
  6. Step 6: Final answer
    x = 6,322.85

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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.