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Finding the Fourth Proportional to 18,597.76, 25,656.24 and 11,521.60

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Solution

The fourth proportional to 18,597.76, 25,656.24 and 11,521.60 is: 15,894.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.76 : 25,656.24 = 11,521.60 : x
  2. Step 2: Convert to fraction form
    18,597.76/25,656.24 = 11,521.60/x
  3. Step 3: Cross multiply
    18,597.76x = 25,656.24 × 11,521.60
  4. Step 4: Simplify right side
    18,597.76x = 295,600,934.78
  5. Step 5: Solve for x
    x = 295,600,934.78/18,597.76
  6. Step 6: Final answer
    x = 15,894.44

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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.