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Finding the Fourth Proportional to 18,659.25, 25,750.60 and 11,002.83

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Solution

The fourth proportional to 18,659.25, 25,750.60 and 11,002.83 is: 15,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.25 : 25,750.60 = 11,002.83 : x
  2. Step 2: Convert to fraction form
    18,659.25/25,750.60 = 11,002.83/x
  3. Step 3: Cross multiply
    18,659.25x = 25,750.60 × 11,002.83
  4. Step 4: Simplify right side
    18,659.25x = 283,329,461.39
  5. Step 5: Solve for x
    x = 283,329,461.39/18,659.25
  6. Step 6: Final answer
    x = 15,184.40

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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.