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Finding the Fourth Proportional to 324,807,435.66, 487,239,794.70 and 91,640,187.66

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Solution

The fourth proportional to 324,807,435.66, 487,239,794.70 and 91,640,187.66 is: 137,468,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,807,435.66 : 487,239,794.70 = 91,640,187.66 : x
  2. Step 2: Convert to fraction form
    324,807,435.66/487,239,794.70 = 91,640,187.66/x
  3. Step 3: Cross multiply
    324,807,435.66x = 487,239,794.70 × 91,640,187.66
  4. Step 4: Simplify right side
    324,807,435.66x = 44,650,746,221,727,872
  5. Step 5: Solve for x
    x = 44,650,746,221,727,872/324,807,435.66
  6. Step 6: Final answer
    x = 137,468,362.23

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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.