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Finding the Fourth Proportional to 18,307.92, 25,267.08 and 11,231.76

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Solution

The fourth proportional to 18,307.92, 25,267.08 and 11,231.76 is: 15,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.92 : 25,267.08 = 11,231.76 : x
  2. Step 2: Convert to fraction form
    18,307.92/25,267.08 = 11,231.76/x
  3. Step 3: Cross multiply
    18,307.92x = 25,267.08 × 11,231.76
  4. Step 4: Simplify right side
    18,307.92x = 283,793,778.46
  5. Step 5: Solve for x
    x = 283,793,778.46/18,307.92
  6. Step 6: Final answer
    x = 15,501.15

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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.