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Finding the Fourth Proportional to 4,805.98, 7,215.13 and 4,080.17

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Solution

The fourth proportional to 4,805.98, 7,215.13 and 4,080.17 is: 6,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,805.98 : 7,215.13 = 4,080.17 : x
  2. Step 2: Convert to fraction form
    4,805.98/7,215.13 = 4,080.17/x
  3. Step 3: Cross multiply
    4,805.98x = 7,215.13 × 4,080.17
  4. Step 4: Simplify right side
    4,805.98x = 29,438,957.16
  5. Step 5: Solve for x
    x = 29,438,957.16/4,805.98
  6. Step 6: Final answer
    x = 6,125.48

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1.5x scale

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.