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Finding the Fourth Proportional to 7,208.76, 9,948.24 and 4,226.88

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Solution

The fourth proportional to 7,208.76, 9,948.24 and 4,226.88 is: 5,833.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.76 : 9,948.24 = 4,226.88 : x
  2. Step 2: Convert to fraction form
    7,208.76/9,948.24 = 4,226.88/x
  3. Step 3: Cross multiply
    7,208.76x = 9,948.24 × 4,226.88
  4. Step 4: Simplify right side
    7,208.76x = 42,050,016.69
  5. Step 5: Solve for x
    x = 42,050,016.69/7,208.76
  6. Step 6: Final answer
    x = 5,833.18

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Double scale
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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.