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Finding the Fourth Proportional to 4,611.88, 6,920.72 and 4,316.68

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Solution

The fourth proportional to 4,611.88, 6,920.72 and 4,316.68 is: 6,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.88 : 6,920.72 = 4,316.68 : x
  2. Step 2: Convert to fraction form
    4,611.88/6,920.72 = 4,316.68/x
  3. Step 3: Cross multiply
    4,611.88x = 6,920.72 × 4,316.68
  4. Step 4: Simplify right side
    4,611.88x = 29,874,533.61
  5. Step 5: Solve for x
    x = 29,874,533.61/4,611.88
  6. Step 6: Final answer
    x = 6,477.73

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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.