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Finding the Fourth Proportional to 7,055.97, 9,737.19 and 3,912.15

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Solution

The fourth proportional to 7,055.97, 9,737.19 and 3,912.15 is: 5,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,055.97 : 9,737.19 = 3,912.15 : x
  2. Step 2: Convert to fraction form
    7,055.97/9,737.19 = 3,912.15/x
  3. Step 3: Cross multiply
    7,055.97x = 9,737.19 × 3,912.15
  4. Step 4: Simplify right side
    7,055.97x = 38,093,347.86
  5. Step 5: Solve for x
    x = 38,093,347.86/7,055.97
  6. Step 6: Final answer
    x = 5,398.74

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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.