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Finding the Fourth Proportional to 18,431.84, 27,649.55 and 7,335.93

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Solution

The fourth proportional to 18,431.84, 27,649.55 and 7,335.93 is: 11,004.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.84 : 27,649.55 = 7,335.93 : x
  2. Step 2: Convert to fraction form
    18,431.84/27,649.55 = 7,335.93/x
  3. Step 3: Cross multiply
    18,431.84x = 27,649.55 × 7,335.93
  4. Step 4: Simplify right side
    18,431.84x = 202,835,285.36
  5. Step 5: Solve for x
    x = 202,835,285.36/18,431.84
  6. Step 6: Final answer
    x = 11,004.62

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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.