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Finding the Fourth Proportional to 7,959.45, 10,969.77 and 6,472.29

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Solution

The fourth proportional to 7,959.45, 10,969.77 and 6,472.29 is: 8,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.45 : 10,969.77 = 6,472.29 : x
  2. Step 2: Convert to fraction form
    7,959.45/10,969.77 = 6,472.29/x
  3. Step 3: Cross multiply
    7,959.45x = 10,969.77 × 6,472.29
  4. Step 4: Simplify right side
    7,959.45x = 70,999,532.67
  5. Step 5: Solve for x
    x = 70,999,532.67/7,959.45
  6. Step 6: Final answer
    x = 8,920.16

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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.