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Finding the Fourth Proportional to 11,507.92, 15,881.09 and 6,792.20

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Solution

The fourth proportional to 11,507.92, 15,881.09 and 6,792.20 is: 9,373.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.92 : 15,881.09 = 6,792.20 : x
  2. Step 2: Convert to fraction form
    11,507.92/15,881.09 = 6,792.20/x
  3. Step 3: Cross multiply
    11,507.92x = 15,881.09 × 6,792.20
  4. Step 4: Simplify right side
    11,507.92x = 107,867,426.13
  5. Step 5: Solve for x
    x = 107,867,426.13/11,507.92
  6. Step 6: Final answer
    x = 9,373.32

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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.