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Finding the Fourth Proportional to 13,093.67, 18,069.64 and 7,125.72

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Solution

The fourth proportional to 13,093.67, 18,069.64 and 7,125.72 is: 9,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,093.67 : 18,069.64 = 7,125.72 : x
  2. Step 2: Convert to fraction form
    13,093.67/18,069.64 = 7,125.72/x
  3. Step 3: Cross multiply
    13,093.67x = 18,069.64 × 7,125.72
  4. Step 4: Simplify right side
    13,093.67x = 128,759,231.25
  5. Step 5: Solve for x
    x = 128,759,231.25/13,093.67
  6. Step 6: Final answer
    x = 9,833.70

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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.