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Finding the Fourth Proportional to 6,765.89, 9,330.87 and 4,248.23

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Solution

The fourth proportional to 6,765.89, 9,330.87 and 4,248.23 is: 5,858.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,765.89 : 9,330.87 = 4,248.23 : x
  2. Step 2: Convert to fraction form
    6,765.89/9,330.87 = 4,248.23/x
  3. Step 3: Cross multiply
    6,765.89x = 9,330.87 × 4,248.23
  4. Step 4: Simplify right side
    6,765.89x = 39,639,635.21
  5. Step 5: Solve for x
    x = 39,639,635.21/6,765.89
  6. Step 6: Final answer
    x = 5,858.75

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Double scale
Find fourth proportional to 6,766.89, 9,332.25 and 4,249.23
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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.