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Finding the Fourth Proportional to 15,211.73, 22,815.80 and 4,681.73

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Solution

The fourth proportional to 15,211.73, 22,815.80 and 4,681.73 is: 7,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.73 : 22,815.80 = 4,681.73 : x
  2. Step 2: Convert to fraction form
    15,211.73/22,815.80 = 4,681.73/x
  3. Step 3: Cross multiply
    15,211.73x = 22,815.80 × 4,681.73
  4. Step 4: Simplify right side
    15,211.73x = 106,817,415.33
  5. Step 5: Solve for x
    x = 106,817,415.33/15,211.73
  6. Step 6: Final answer
    x = 7,022.04

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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.