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Finding the Fourth Proportional to 10,622.96, 15,939.96 and 5,940.08

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Solution

The fourth proportional to 10,622.96, 15,939.96 and 5,940.08 is: 8,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,622.96 : 15,939.96 = 5,940.08 : x
  2. Step 2: Convert to fraction form
    10,622.96/15,939.96 = 5,940.08/x
  3. Step 3: Cross multiply
    10,622.96x = 15,939.96 × 5,940.08
  4. Step 4: Simplify right side
    10,622.96x = 94,684,637.60
  5. Step 5: Solve for x
    x = 94,684,637.60/10,622.96
  6. Step 6: Final answer
    x = 8,913.21

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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.