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Finding the Fourth Proportional to 60,409.98, 90,591.87 and 19,874.01

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Solution

The fourth proportional to 60,409.98, 90,591.87 and 19,874.01 is: 29,803.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,409.98 : 90,591.87 = 19,874.01 : x
  2. Step 2: Convert to fraction form
    60,409.98/90,591.87 = 19,874.01/x
  3. Step 3: Cross multiply
    60,409.98x = 90,591.87 × 19,874.01
  4. Step 4: Simplify right side
    60,409.98x = 1,800,423,730.30
  5. Step 5: Solve for x
    x = 1,800,423,730.30/60,409.98
  6. Step 6: Final answer
    x = 29,803.42

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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.