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Finding the Fourth Proportional to 84,889,261.20, 127,333,891.80 and 84,889,261.20

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Solution

The fourth proportional to 84,889,261.20, 127,333,891.80 and 84,889,261.20 is: 127,333,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,889,261.20 : 127,333,891.80 = 84,889,261.20 : x
  2. Step 2: Convert to fraction form
    84,889,261.20/127,333,891.80 = 84,889,261.20/x
  3. Step 3: Cross multiply
    84,889,261.20x = 127,333,891.80 × 84,889,261.20
  4. Step 4: Simplify right side
    84,889,261.20x = 10,809,280,000,622,738
  5. Step 5: Solve for x
    x = 10,809,280,000,622,738/84,889,261.20
  6. Step 6: Final answer
    x = 127,333,891.80

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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.