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Finding the Fourth Proportional to 19,360.62, 29,041.20 and 5,509.62

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Solution

The fourth proportional to 19,360.62, 29,041.20 and 5,509.62 is: 8,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,360.62 : 29,041.20 = 5,509.62 : x
  2. Step 2: Convert to fraction form
    19,360.62/29,041.20 = 5,509.62/x
  3. Step 3: Cross multiply
    19,360.62x = 29,041.20 × 5,509.62
  4. Step 4: Simplify right side
    19,360.62x = 160,005,976.34
  5. Step 5: Solve for x
    x = 160,005,976.34/19,360.62
  6. Step 6: Final answer
    x = 8,264.51

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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.