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Finding the Fourth Proportional to 19,374.80, 29,062.20 and 5,334.80

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Solution

The fourth proportional to 19,374.80, 29,062.20 and 5,334.80 is: 8,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,374.80 : 29,062.20 = 5,334.80 : x
  2. Step 2: Convert to fraction form
    19,374.80/29,062.20 = 5,334.80/x
  3. Step 3: Cross multiply
    19,374.80x = 29,062.20 × 5,334.80
  4. Step 4: Simplify right side
    19,374.80x = 155,041,024.56
  5. Step 5: Solve for x
    x = 155,041,024.56/19,374.80
  6. Step 6: Final answer
    x = 8,002.20

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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.