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Finding the Fourth Proportional to 15,799.76, 21,793.64 and 12,014.63

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Solution

The fourth proportional to 15,799.76, 21,793.64 and 12,014.63 is: 16,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,799.76 : 21,793.64 = 12,014.63 : x
  2. Step 2: Convert to fraction form
    15,799.76/21,793.64 = 12,014.63/x
  3. Step 3: Cross multiply
    15,799.76x = 21,793.64 × 12,014.63
  4. Step 4: Simplify right side
    15,799.76x = 261,842,551.91
  5. Step 5: Solve for x
    x = 261,842,551.91/15,799.76
  6. Step 6: Final answer
    x = 16,572.57

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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.