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Finding the Fourth Proportional to 15,048.84, 20,769.06 and 10,859.72

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Solution

The fourth proportional to 15,048.84, 20,769.06 and 10,859.72 is: 14,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.84 : 20,769.06 = 10,859.72 : x
  2. Step 2: Convert to fraction form
    15,048.84/20,769.06 = 10,859.72/x
  3. Step 3: Cross multiply
    15,048.84x = 20,769.06 × 10,859.72
  4. Step 4: Simplify right side
    15,048.84x = 225,546,176.26
  5. Step 5: Solve for x
    x = 225,546,176.26/15,048.84
  6. Step 6: Final answer
    x = 14,987.61

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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.