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Finding the Fourth Proportional to 9,343.36, 12,885.90 and 7,895.24

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Solution

The fourth proportional to 9,343.36, 12,885.90 and 7,895.24 is: 10,888.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,343.36 : 12,885.90 = 7,895.24 : x
  2. Step 2: Convert to fraction form
    9,343.36/12,885.90 = 7,895.24/x
  3. Step 3: Cross multiply
    9,343.36x = 12,885.90 × 7,895.24
  4. Step 4: Simplify right side
    9,343.36x = 101,737,208.69
  5. Step 5: Solve for x
    x = 101,737,208.69/9,343.36
  6. Step 6: Final answer
    x = 10,888.72

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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.