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Finding the Fourth Proportional to 7,223.22, 9,963.72 and 4,985.01

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Solution

The fourth proportional to 7,223.22, 9,963.72 and 4,985.01 is: 6,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.22 : 9,963.72 = 4,985.01 : x
  2. Step 2: Convert to fraction form
    7,223.22/9,963.72 = 4,985.01/x
  3. Step 3: Cross multiply
    7,223.22x = 9,963.72 × 4,985.01
  4. Step 4: Simplify right side
    7,223.22x = 49,669,243.84
  5. Step 5: Solve for x
    x = 49,669,243.84/7,223.22
  6. Step 6: Final answer
    x = 6,876.33

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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.