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Finding the Fourth Proportional to 7,222.71, 9,967.80 and 4,036.02

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Solution

The fourth proportional to 7,222.71, 9,967.80 and 4,036.02 is: 5,569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.71 : 9,967.80 = 4,036.02 : x
  2. Step 2: Convert to fraction form
    7,222.71/9,967.80 = 4,036.02/x
  3. Step 3: Cross multiply
    7,222.71x = 9,967.80 × 4,036.02
  4. Step 4: Simplify right side
    7,222.71x = 40,230,240.16
  5. Step 5: Solve for x
    x = 40,230,240.16/7,222.71
  6. Step 6: Final answer
    x = 5,569.96

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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.