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Finding the Fourth Proportional to 7,957.78, 10,981.06 and 4,372.63

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Solution

The fourth proportional to 7,957.78, 10,981.06 and 4,372.63 is: 6,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.78 : 10,981.06 = 4,372.63 : x
  2. Step 2: Convert to fraction form
    7,957.78/10,981.06 = 4,372.63/x
  3. Step 3: Cross multiply
    7,957.78x = 10,981.06 × 4,372.63
  4. Step 4: Simplify right side
    7,957.78x = 48,016,112.39
  5. Step 5: Solve for x
    x = 48,016,112.39/7,957.78
  6. Step 6: Final answer
    x = 6,033.86

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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.