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Finding the Fourth Proportional to 12,965.93, 17,892.72 and 7,591.53

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Solution

The fourth proportional to 12,965.93, 17,892.72 and 7,591.53 is: 10,476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.93 : 17,892.72 = 7,591.53 : x
  2. Step 2: Convert to fraction form
    12,965.93/17,892.72 = 7,591.53/x
  3. Step 3: Cross multiply
    12,965.93x = 17,892.72 × 7,591.53
  4. Step 4: Simplify right side
    12,965.93x = 135,833,120.66
  5. Step 5: Solve for x
    x = 135,833,120.66/12,965.93
  6. Step 6: Final answer
    x = 10,476.16

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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.