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Finding the Fourth Proportional to 18,443.61, 27,669.51 and 5,294.97

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Solution

The fourth proportional to 18,443.61, 27,669.51 and 5,294.97 is: 7,943.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.61 : 27,669.51 = 5,294.97 : x
  2. Step 2: Convert to fraction form
    18,443.61/27,669.51 = 5,294.97/x
  3. Step 3: Cross multiply
    18,443.61x = 27,669.51 × 5,294.97
  4. Step 4: Simplify right side
    18,443.61x = 146,509,225.36
  5. Step 5: Solve for x
    x = 146,509,225.36/18,443.61
  6. Step 6: Final answer
    x = 7,943.63

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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.