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Finding the Fourth Proportional to 165,912,810.90, 248,869,216.35 and 165,912,810.90

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Solution

The fourth proportional to 165,912,810.90, 248,869,216.35 and 165,912,810.90 is: 248,869,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,912,810.90 : 248,869,216.35 = 165,912,810.90 : x
  2. Step 2: Convert to fraction form
    165,912,810.90/248,869,216.35 = 165,912,810.90/x
  3. Step 3: Cross multiply
    165,912,810.90x = 248,869,216.35 × 165,912,810.90
  4. Step 4: Simplify right side
    165,912,810.90x = 41,290,591,231,108,736
  5. Step 5: Solve for x
    x = 41,290,591,231,108,736/165,912,810.90
  6. Step 6: Final answer
    x = 248,869,216.35

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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.