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Finding the Fourth Proportional to 15,648.54, 21,595.50 and 8,574.96

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Solution

The fourth proportional to 15,648.54, 21,595.50 and 8,574.96 is: 11,833.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.54 : 21,595.50 = 8,574.96 : x
  2. Step 2: Convert to fraction form
    15,648.54/21,595.50 = 8,574.96/x
  3. Step 3: Cross multiply
    15,648.54x = 21,595.50 × 8,574.96
  4. Step 4: Simplify right side
    15,648.54x = 185,180,548.68
  5. Step 5: Solve for x
    x = 185,180,548.68/15,648.54
  6. Step 6: Final answer
    x = 11,833.73

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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.