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Finding the Fourth Proportional to 18,151.49, 27,220.18 and 7,056.71

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Solution

The fourth proportional to 18,151.49, 27,220.18 and 7,056.71 is: 10,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151.49 : 27,220.18 = 7,056.71 : x
  2. Step 2: Convert to fraction form
    18,151.49/27,220.18 = 7,056.71/x
  3. Step 3: Cross multiply
    18,151.49x = 27,220.18 × 7,056.71
  4. Step 4: Simplify right side
    18,151.49x = 192,084,916.41
  5. Step 5: Solve for x
    x = 192,084,916.41/18,151.49
  6. Step 6: Final answer
    x = 10,582.32

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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.