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Finding the Fourth Proportional to 220,161,202.40, 330,240,491.40 and 56,398,642.40

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Solution

The fourth proportional to 220,161,202.40, 330,240,491.40 and 56,398,642.40 is: 84,597,627.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,161,202.40 : 330,240,491.40 = 56,398,642.40 : x
  2. Step 2: Convert to fraction form
    220,161,202.40/330,240,491.40 = 56,398,642.40/x
  3. Step 3: Cross multiply
    220,161,202.40x = 330,240,491.40 × 56,398,642.40
  4. Step 4: Simplify right side
    220,161,202.40x = 18,625,115,380,468,872
  5. Step 5: Solve for x
    x = 18,625,115,380,468,872/220,161,202.40
  6. Step 6: Final answer
    x = 84,597,627.45

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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.