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Finding the Fourth Proportional to 9,911.07, 13,673.88 and 5,659.07

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Solution

The fourth proportional to 9,911.07, 13,673.88 and 5,659.07 is: 7,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.07 : 13,673.88 = 5,659.07 : x
  2. Step 2: Convert to fraction form
    9,911.07/13,673.88 = 5,659.07/x
  3. Step 3: Cross multiply
    9,911.07x = 13,673.88 × 5,659.07
  4. Step 4: Simplify right side
    9,911.07x = 77,381,375.72
  5. Step 5: Solve for x
    x = 77,381,375.72/9,911.07
  6. Step 6: Final answer
    x = 7,807.57

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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.