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Finding the Fourth Proportional to 18,356.81, 25,332.41 and 10,904.81

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Solution

The fourth proportional to 18,356.81, 25,332.41 and 10,904.81 is: 15,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.81 : 25,332.41 = 10,904.81 : x
  2. Step 2: Convert to fraction form
    18,356.81/25,332.41 = 10,904.81/x
  3. Step 3: Cross multiply
    18,356.81x = 25,332.41 × 10,904.81
  4. Step 4: Simplify right side
    18,356.81x = 276,245,126.70
  5. Step 5: Solve for x
    x = 276,245,126.70/18,356.81
  6. Step 6: Final answer
    x = 15,048.64

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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.