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Finding the Fourth Proportional to 4,885.80, 6,617.70 and 4,885.80

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Solution

The fourth proportional to 4,885.80, 6,617.70 and 4,885.80 is: 6,617.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.80 : 6,617.70 = 4,885.80 : x
  2. Step 2: Convert to fraction form
    4,885.80/6,617.70 = 4,885.80/x
  3. Step 3: Cross multiply
    4,885.80x = 6,617.70 × 4,885.80
  4. Step 4: Simplify right side
    4,885.80x = 32,332,758.66
  5. Step 5: Solve for x
    x = 32,332,758.66/4,885.80
  6. Step 6: Final answer
    x = 6,617.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.