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Finding the Fourth Proportional to 6,985.92, 10,470.24 and 3,085.92

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Solution

The fourth proportional to 6,985.92, 10,470.24 and 3,085.92 is: 4,625.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.92 : 10,470.24 = 3,085.92 : x
  2. Step 2: Convert to fraction form
    6,985.92/10,470.24 = 3,085.92/x
  3. Step 3: Cross multiply
    6,985.92x = 10,470.24 × 3,085.92
  4. Step 4: Simplify right side
    6,985.92x = 32,310,323.02
  5. Step 5: Solve for x
    x = 32,310,323.02/6,985.92
  6. Step 6: Final answer
    x = 4,625.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.