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Finding the Fourth Proportional to 4,478.76, 6,719.22 and 4,404.38

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Solution

The fourth proportional to 4,478.76, 6,719.22 and 4,404.38 is: 6,607.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.76 : 6,719.22 = 4,404.38 : x
  2. Step 2: Convert to fraction form
    4,478.76/6,719.22 = 4,404.38/x
  3. Step 3: Cross multiply
    4,478.76x = 6,719.22 × 4,404.38
  4. Step 4: Simplify right side
    4,478.76x = 29,593,964.59
  5. Step 5: Solve for x
    x = 29,593,964.59/4,478.76
  6. Step 6: Final answer
    x = 6,607.62

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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.