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Finding the Fourth Proportional to 18,359.25, 25,336.07 and 10,403.11

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Solution

The fourth proportional to 18,359.25, 25,336.07 and 10,403.11 is: 14,356.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.25 : 25,336.07 = 10,403.11 : x
  2. Step 2: Convert to fraction form
    18,359.25/25,336.07 = 10,403.11/x
  3. Step 3: Cross multiply
    18,359.25x = 25,336.07 × 10,403.11
  4. Step 4: Simplify right side
    18,359.25x = 263,573,923.18
  5. Step 5: Solve for x
    x = 263,573,923.18/18,359.25
  6. Step 6: Final answer
    x = 14,356.46

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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.