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Finding the Fourth Proportional to 7,842.68, 10,822.74 and 4,305.96

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Solution

The fourth proportional to 7,842.68, 10,822.74 and 4,305.96 is: 5,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.68 : 10,822.74 = 4,305.96 : x
  2. Step 2: Convert to fraction form
    7,842.68/10,822.74 = 4,305.96/x
  3. Step 3: Cross multiply
    7,842.68x = 10,822.74 × 4,305.96
  4. Step 4: Simplify right side
    7,842.68x = 46,602,285.53
  5. Step 5: Solve for x
    x = 46,602,285.53/7,842.68
  6. Step 6: Final answer
    x = 5,942.14

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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.