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Finding the Fourth Proportional to 66,669,372.80, 92,003,236.80 and 37,697,033.60

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Solution

The fourth proportional to 66,669,372.80, 92,003,236.80 and 37,697,033.60 is: 52,021,624.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,669,372.80 : 92,003,236.80 = 37,697,033.60 : x
  2. Step 2: Convert to fraction form
    66,669,372.80/92,003,236.80 = 37,697,033.60/x
  3. Step 3: Cross multiply
    66,669,372.80x = 92,003,236.80 × 37,697,033.60
  4. Step 4: Simplify right side
    66,669,372.80x = 3,468,249,108,958,356.50
  5. Step 5: Solve for x
    x = 3,468,249,108,958,356.50/66,669,372.80
  6. Step 6: Final answer
    x = 52,021,624.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.