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Finding the Fourth Proportional to 6,866.88, 9,478.53 and 4,034.21

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Solution

The fourth proportional to 6,866.88, 9,478.53 and 4,034.21 is: 5,568.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,866.88 : 9,478.53 = 4,034.21 : x
  2. Step 2: Convert to fraction form
    6,866.88/9,478.53 = 4,034.21/x
  3. Step 3: Cross multiply
    6,866.88x = 9,478.53 × 4,034.21
  4. Step 4: Simplify right side
    6,866.88x = 38,238,333.12
  5. Step 5: Solve for x
    x = 38,238,333.12/6,866.88
  6. Step 6: Final answer
    x = 5,568.52

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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.