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Finding the Fourth Proportional to 9,954.58, 13,737.38 and 5,478.20

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Solution

The fourth proportional to 9,954.58, 13,737.38 and 5,478.20 is: 7,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,954.58 : 13,737.38 = 5,478.20 : x
  2. Step 2: Convert to fraction form
    9,954.58/13,737.38 = 5,478.20/x
  3. Step 3: Cross multiply
    9,954.58x = 13,737.38 × 5,478.20
  4. Step 4: Simplify right side
    9,954.58x = 75,256,115.12
  5. Step 5: Solve for x
    x = 75,256,115.12/9,954.58
  6. Step 6: Final answer
    x = 7,559.95

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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.