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Finding the Fourth Proportional to 65,972,701.80, 99,006,291.90 and 27,661,710.60

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Solution

The fourth proportional to 65,972,701.80, 99,006,291.90 and 27,661,710.60 is: 41,512,372.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,972,701.80 : 99,006,291.90 = 27,661,710.60 : x
  2. Step 2: Convert to fraction form
    65,972,701.80/99,006,291.90 = 27,661,710.60/x
  3. Step 3: Cross multiply
    65,972,701.80x = 99,006,291.90 × 27,661,710.60
  4. Step 4: Simplify right side
    65,972,701.80x = 2,738,683,394,116,924.50
  5. Step 5: Solve for x
    x = 2,738,683,394,116,924.50/65,972,701.80
  6. Step 6: Final answer
    x = 41,512,372.84

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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.