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Finding the Fourth Proportional to 10,617.28, 15,915.54 and 5,939.56

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Solution

The fourth proportional to 10,617.28, 15,915.54 and 5,939.56 is: 8,903.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.28 : 15,915.54 = 5,939.56 : x
  2. Step 2: Convert to fraction form
    10,617.28/15,915.54 = 5,939.56/x
  3. Step 3: Cross multiply
    10,617.28x = 15,915.54 × 5,939.56
  4. Step 4: Simplify right side
    10,617.28x = 94,531,304.76
  5. Step 5: Solve for x
    x = 94,531,304.76/10,617.28
  6. Step 6: Final answer
    x = 8,903.53

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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.