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Finding the Fourth Proportional to 19,301.22, 28,948.95 and 7,622.46

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Solution

The fourth proportional to 19,301.22, 28,948.95 and 7,622.46 is: 11,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,301.22 : 28,948.95 = 7,622.46 : x
  2. Step 2: Convert to fraction form
    19,301.22/28,948.95 = 7,622.46/x
  3. Step 3: Cross multiply
    19,301.22x = 28,948.95 × 7,622.46
  4. Step 4: Simplify right side
    19,301.22x = 220,662,213.42
  5. Step 5: Solve for x
    x = 220,662,213.42/19,301.22
  6. Step 6: Final answer
    x = 11,432.55

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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.