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Finding the Fourth Proportional to 5,915.92, 8,905.93 and 5,399.24

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Solution

The fourth proportional to 5,915.92, 8,905.93 and 5,399.24 is: 8,128.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.92 : 8,905.93 = 5,399.24 : x
  2. Step 2: Convert to fraction form
    5,915.92/8,905.93 = 5,399.24/x
  3. Step 3: Cross multiply
    5,915.92x = 8,905.93 × 5,399.24
  4. Step 4: Simplify right side
    5,915.92x = 48,085,275.93
  5. Step 5: Solve for x
    x = 48,085,275.93/5,915.92
  6. Step 6: Final answer
    x = 8,128.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.