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Finding the Fourth Proportional to 18,332.78, 25,299.24 and 9,949.28

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Solution

The fourth proportional to 18,332.78, 25,299.24 and 9,949.28 is: 13,730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,332.78 : 25,299.24 = 9,949.28 : x
  2. Step 2: Convert to fraction form
    18,332.78/25,299.24 = 9,949.28/x
  3. Step 3: Cross multiply
    18,332.78x = 25,299.24 × 9,949.28
  4. Step 4: Simplify right side
    18,332.78x = 251,709,222.55
  5. Step 5: Solve for x
    x = 251,709,222.55/18,332.78
  6. Step 6: Final answer
    x = 13,730.01

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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.