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Finding the Fourth Proportional to 7,185.78, 9,914.40 and 4,532.22

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Solution

The fourth proportional to 7,185.78, 9,914.40 and 4,532.22 is: 6,253.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.78 : 9,914.40 = 4,532.22 : x
  2. Step 2: Convert to fraction form
    7,185.78/9,914.40 = 4,532.22/x
  3. Step 3: Cross multiply
    7,185.78x = 9,914.40 × 4,532.22
  4. Step 4: Simplify right side
    7,185.78x = 44,934,241.97
  5. Step 5: Solve for x
    x = 44,934,241.97/7,185.78
  6. Step 6: Final answer
    x = 6,253.22

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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.