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Finding the Fourth Proportional to 18,801.16, 25,943.70 and 11,246

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Solution

The fourth proportional to 18,801.16, 25,943.70 and 11,246 is: 15,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.16 : 25,943.70 = 11,246 : x
  2. Step 2: Convert to fraction form
    18,801.16/25,943.70 = 11,246/x
  3. Step 3: Cross multiply
    18,801.16x = 25,943.70 × 11,246
  4. Step 4: Simplify right side
    18,801.16x = 291,762,850.20
  5. Step 5: Solve for x
    x = 291,762,850.20/18,801.16
  6. Step 6: Final answer
    x = 15,518.34

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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.