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Finding the Fourth Proportional to 27,959.76, 38,584.98 and 15,384.24

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Solution

The fourth proportional to 27,959.76, 38,584.98 and 15,384.24 is: 21,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.76 : 38,584.98 = 15,384.24 : x
  2. Step 2: Convert to fraction form
    27,959.76/38,584.98 = 15,384.24/x
  3. Step 3: Cross multiply
    27,959.76x = 38,584.98 × 15,384.24
  4. Step 4: Simplify right side
    27,959.76x = 593,600,592.72
  5. Step 5: Solve for x
    x = 593,600,592.72/27,959.76
  6. Step 6: Final answer
    x = 21,230.53

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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.