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Finding the Fourth Proportional to 9,992.76, 13,787.52 and 7,335.48

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Solution

The fourth proportional to 9,992.76, 13,787.52 and 7,335.48 is: 10,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.76 : 13,787.52 = 7,335.48 : x
  2. Step 2: Convert to fraction form
    9,992.76/13,787.52 = 7,335.48/x
  3. Step 3: Cross multiply
    9,992.76x = 13,787.52 × 7,335.48
  4. Step 4: Simplify right side
    9,992.76x = 101,138,077.21
  5. Step 5: Solve for x
    x = 101,138,077.21/9,992.76
  6. Step 6: Final answer
    x = 10,121.14

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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.