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Finding the Fourth Proportional to 15,793.33, 21,789.35 and 10,127.63

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Solution

The fourth proportional to 15,793.33, 21,789.35 and 10,127.63 is: 13,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.33 : 21,789.35 = 10,127.63 : x
  2. Step 2: Convert to fraction form
    15,793.33/21,789.35 = 10,127.63/x
  3. Step 3: Cross multiply
    15,793.33x = 21,789.35 × 10,127.63
  4. Step 4: Simplify right side
    15,793.33x = 220,674,573.52
  5. Step 5: Solve for x
    x = 220,674,573.52/15,793.33
  6. Step 6: Final answer
    x = 13,972.64

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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.