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Finding the Fourth Proportional to 219,967,641.70, 308,815,632.80 and 219,967,641.70

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Solution

The fourth proportional to 219,967,641.70, 308,815,632.80 and 219,967,641.70 is: 308,815,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,967,641.70 : 308,815,632.80 = 219,967,641.70 : x
  2. Step 2: Convert to fraction form
    219,967,641.70/308,815,632.80 = 219,967,641.70/x
  3. Step 3: Cross multiply
    219,967,641.70x = 308,815,632.80 × 219,967,641.70
  4. Step 4: Simplify right side
    219,967,641.70x = 67,929,446,467,109,168
  5. Step 5: Solve for x
    x = 67,929,446,467,109,168/219,967,641.70
  6. Step 6: Final answer
    x = 308,815,632.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.