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Finding the Fourth Proportional to 8,357.92, 11,534.98 and 4,821.16

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Solution

The fourth proportional to 8,357.92, 11,534.98 and 4,821.16 is: 6,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.92 : 11,534.98 = 4,821.16 : x
  2. Step 2: Convert to fraction form
    8,357.92/11,534.98 = 4,821.16/x
  3. Step 3: Cross multiply
    8,357.92x = 11,534.98 × 4,821.16
  4. Step 4: Simplify right side
    8,357.92x = 55,611,984.18
  5. Step 5: Solve for x
    x = 55,611,984.18/8,357.92
  6. Step 6: Final answer
    x = 6,653.81

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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.