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Finding the Fourth Proportional to 66,361,874.80, 99,542,812.20 and 55,024,466.80

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Solution

The fourth proportional to 66,361,874.80, 99,542,812.20 and 55,024,466.80 is: 82,536,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361,874.80 : 99,542,812.20 = 55,024,466.80 : x
  2. Step 2: Convert to fraction form
    66,361,874.80/99,542,812.20 = 55,024,466.80/x
  3. Step 3: Cross multiply
    66,361,874.80x = 99,542,812.20 × 55,024,466.80
  4. Step 4: Simplify right side
    66,361,874.80x = 5,477,290,165,077,535
  5. Step 5: Solve for x
    x = 5,477,290,165,077,535/66,361,874.80
  6. Step 6: Final answer
    x = 82,536,700.20

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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.