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Finding the Fourth Proportional to 73,757,912.80, 110,636,869.20 and 31,202,111.20

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Solution

The fourth proportional to 73,757,912.80, 110,636,869.20 and 31,202,111.20 is: 46,803,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,757,912.80 : 110,636,869.20 = 31,202,111.20 : x
  2. Step 2: Convert to fraction form
    73,757,912.80/110,636,869.20 = 31,202,111.20/x
  3. Step 3: Cross multiply
    73,757,912.80x = 110,636,869.20 × 31,202,111.20
  4. Step 4: Simplify right side
    73,757,912.80x = 3,452,103,895,598,255
  5. Step 5: Solve for x
    x = 3,452,103,895,598,255/73,757,912.80
  6. Step 6: Final answer
    x = 46,803,166.80

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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.