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Finding the Fourth Proportional to 66,203,881.20, 99,246,724.20 and 25,804,969.20

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Solution

The fourth proportional to 66,203,881.20, 99,246,724.20 and 25,804,969.20 is: 38,684,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203,881.20 : 99,246,724.20 = 25,804,969.20 : x
  2. Step 2: Convert to fraction form
    66,203,881.20/99,246,724.20 = 25,804,969.20/x
  3. Step 3: Cross multiply
    66,203,881.20x = 99,246,724.20 × 25,804,969.20
  4. Step 4: Simplify right side
    66,203,881.20x = 2,561,058,661,181,894.50
  5. Step 5: Solve for x
    x = 2,561,058,661,181,894.50/66,203,881.20
  6. Step 6: Final answer
    x = 38,684,418.72

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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.