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Finding the Fourth Proportional to 3,409.84, 5,115.05 and 944.66

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Solution

The fourth proportional to 3,409.84, 5,115.05 and 944.66 is: 1,417.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.84 : 5,115.05 = 944.66 : x
  2. Step 2: Convert to fraction form
    3,409.84/5,115.05 = 944.66/x
  3. Step 3: Cross multiply
    3,409.84x = 5,115.05 × 944.66
  4. Step 4: Simplify right side
    3,409.84x = 4,831,983.13
  5. Step 5: Solve for x
    x = 4,831,983.13/3,409.84
  6. Step 6: Final answer
    x = 1,417.07

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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.