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Finding the Fourth Proportional to 15,143.10, 22,687.65 and 7,334.70

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Solution

The fourth proportional to 15,143.10, 22,687.65 and 7,334.70 is: 10,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.10 : 22,687.65 = 7,334.70 : x
  2. Step 2: Convert to fraction form
    15,143.10/22,687.65 = 7,334.70/x
  3. Step 3: Cross multiply
    15,143.10x = 22,687.65 × 7,334.70
  4. Step 4: Simplify right side
    15,143.10x = 166,407,106.46
  5. Step 5: Solve for x
    x = 166,407,106.46/15,143.10
  6. Step 6: Final answer
    x = 10,988.97

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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.