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Finding the Fourth Proportional to 8,560.92, 11,802.42 and 6,405.48

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Solution

The fourth proportional to 8,560.92, 11,802.42 and 6,405.48 is: 8,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.92 : 11,802.42 = 6,405.48 : x
  2. Step 2: Convert to fraction form
    8,560.92/11,802.42 = 6,405.48/x
  3. Step 3: Cross multiply
    8,560.92x = 11,802.42 × 6,405.48
  4. Step 4: Simplify right side
    8,560.92x = 75,600,165.26
  5. Step 5: Solve for x
    x = 75,600,165.26/8,560.92
  6. Step 6: Final answer
    x = 8,830.85

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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.