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Finding the Fourth Proportional to 5,609,255.40, 8,407,978.20 and 2,196,223.20

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Solution

The fourth proportional to 5,609,255.40, 8,407,978.20 and 2,196,223.20 is: 3,292,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609,255.40 : 8,407,978.20 = 2,196,223.20 : x
  2. Step 2: Convert to fraction form
    5,609,255.40/8,407,978.20 = 2,196,223.20/x
  3. Step 3: Cross multiply
    5,609,255.40x = 8,407,978.20 × 2,196,223.20
  4. Step 4: Simplify right side
    5,609,255.40x = 18,465,796,787,934.24
  5. Step 5: Solve for x
    x = 18,465,796,787,934.24/5,609,255.40
  6. Step 6: Final answer
    x = 3,292,022.82

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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.