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Finding the Fourth Proportional to 33,970.78, 50,988.57 and 20,848.78

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Solution

The fourth proportional to 33,970.78, 50,988.57 and 20,848.78 is: 31,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,970.78 : 50,988.57 = 20,848.78 : x
  2. Step 2: Convert to fraction form
    33,970.78/50,988.57 = 20,848.78/x
  3. Step 3: Cross multiply
    33,970.78x = 50,988.57 × 20,848.78
  4. Step 4: Simplify right side
    33,970.78x = 1,063,049,478.44
  5. Step 5: Solve for x
    x = 1,063,049,478.44/33,970.78
  6. Step 6: Final answer
    x = 31,293.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.