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Finding the Fourth Proportional to 18,591.32, 25,661.71 and 11,038.88

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Solution

The fourth proportional to 18,591.32, 25,661.71 and 11,038.88 is: 15,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.32 : 25,661.71 = 11,038.88 : x
  2. Step 2: Convert to fraction form
    18,591.32/25,661.71 = 11,038.88/x
  3. Step 3: Cross multiply
    18,591.32x = 25,661.71 × 11,038.88
  4. Step 4: Simplify right side
    18,591.32x = 283,276,615.24
  5. Step 5: Solve for x
    x = 283,276,615.24/18,591.32
  6. Step 6: Final answer
    x = 15,237.03

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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.