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Finding the Fourth Proportional to 6,240.84, 8,615.52 and 4,821.33

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Solution

The fourth proportional to 6,240.84, 8,615.52 and 4,821.33 is: 6,655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.84 : 8,615.52 = 4,821.33 : x
  2. Step 2: Convert to fraction form
    6,240.84/8,615.52 = 4,821.33/x
  3. Step 3: Cross multiply
    6,240.84x = 8,615.52 × 4,821.33
  4. Step 4: Simplify right side
    6,240.84x = 41,538,265.04
  5. Step 5: Solve for x
    x = 41,538,265.04/6,240.84
  6. Step 6: Final answer
    x = 6,655.88

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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.