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Finding the Fourth Proportional to 4,885.92, 7,329.60 and 1,766.16

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Solution

The fourth proportional to 4,885.92, 7,329.60 and 1,766.16 is: 2,649.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.92 : 7,329.60 = 1,766.16 : x
  2. Step 2: Convert to fraction form
    4,885.92/7,329.60 = 1,766.16/x
  3. Step 3: Cross multiply
    4,885.92x = 7,329.60 × 1,766.16
  4. Step 4: Simplify right side
    4,885.92x = 12,945,246.34
  5. Step 5: Solve for x
    x = 12,945,246.34/4,885.92
  6. Step 6: Final answer
    x = 2,649.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.