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Finding the Fourth Proportional to 12,396.60, 17,113.98 and 9,557.75

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Solution

The fourth proportional to 12,396.60, 17,113.98 and 9,557.75 is: 13,194.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.60 : 17,113.98 = 9,557.75 : x
  2. Step 2: Convert to fraction form
    12,396.60/17,113.98 = 9,557.75/x
  3. Step 3: Cross multiply
    12,396.60x = 17,113.98 × 9,557.75
  4. Step 4: Simplify right side
    12,396.60x = 163,571,056.78
  5. Step 5: Solve for x
    x = 163,571,056.78/12,396.60
  6. Step 6: Final answer
    x = 13,194.83

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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.