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Finding the Fourth Proportional to 6,929.02, 9,561.90 and 3,785.22

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Solution

The fourth proportional to 6,929.02, 9,561.90 and 3,785.22 is: 5,223.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.02 : 9,561.90 = 3,785.22 : x
  2. Step 2: Convert to fraction form
    6,929.02/9,561.90 = 3,785.22/x
  3. Step 3: Cross multiply
    6,929.02x = 9,561.90 × 3,785.22
  4. Step 4: Simplify right side
    6,929.02x = 36,193,895.12
  5. Step 5: Solve for x
    x = 36,193,895.12/6,929.02
  6. Step 6: Final answer
    x = 5,223.52

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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.