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Finding the Fourth Proportional to 5,548.42, 7,655 and 3,955.32

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Solution

The fourth proportional to 5,548.42, 7,655 and 3,955.32 is: 5,457.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,548.42 : 7,655 = 3,955.32 : x
  2. Step 2: Convert to fraction form
    5,548.42/7,655 = 3,955.32/x
  3. Step 3: Cross multiply
    5,548.42x = 7,655 × 3,955.32
  4. Step 4: Simplify right side
    5,548.42x = 30,277,974.60
  5. Step 5: Solve for x
    x = 30,277,974.60/5,548.42
  6. Step 6: Final answer
    x = 5,457.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.