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Finding the Fourth Proportional to 18,373.60, 25,332.09 and 11,901.82

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Solution

The fourth proportional to 18,373.60, 25,332.09 and 11,901.82 is: 16,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.60 : 25,332.09 = 11,901.82 : x
  2. Step 2: Convert to fraction form
    18,373.60/25,332.09 = 11,901.82/x
  3. Step 3: Cross multiply
    18,373.60x = 25,332.09 × 11,901.82
  4. Step 4: Simplify right side
    18,373.60x = 301,497,975.40
  5. Step 5: Solve for x
    x = 301,497,975.40/18,373.60
  6. Step 6: Final answer
    x = 16,409.30

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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.