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Finding the Fourth Proportional to 22,366.70, 30,864.76 and 13,756.16

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Solution

The fourth proportional to 22,366.70, 30,864.76 and 13,756.16 is: 18,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,366.70 : 30,864.76 = 13,756.16 : x
  2. Step 2: Convert to fraction form
    22,366.70/30,864.76 = 13,756.16/x
  3. Step 3: Cross multiply
    22,366.70x = 30,864.76 × 13,756.16
  4. Step 4: Simplify right side
    22,366.70x = 424,580,576.92
  5. Step 5: Solve for x
    x = 424,580,576.92/22,366.70
  6. Step 6: Final answer
    x = 18,982.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.