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Finding the Fourth Proportional to 217,832,115.90, 305,730,237.30 and 217,832,115.90

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Solution

The fourth proportional to 217,832,115.90, 305,730,237.30 and 217,832,115.90 is: 305,730,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,832,115.90 : 305,730,237.30 = 217,832,115.90 : x
  2. Step 2: Convert to fraction form
    217,832,115.90/305,730,237.30 = 217,832,115.90/x
  3. Step 3: Cross multiply
    217,832,115.90x = 305,730,237.30 × 217,832,115.90
  4. Step 4: Simplify right side
    217,832,115.90x = 66,597,864,485,668,104
  5. Step 5: Solve for x
    x = 66,597,864,485,668,104/217,832,115.90
  6. Step 6: Final answer
    x = 305,730,237.30

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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.