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Finding the Fourth Proportional to 73,758,121.20, 110,604,004.20 and 28,304,809.20

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Solution

The fourth proportional to 73,758,121.20, 110,604,004.20 and 28,304,809.20 is: 42,444,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,758,121.20 : 110,604,004.20 = 28,304,809.20 : x
  2. Step 2: Convert to fraction form
    73,758,121.20/110,604,004.20 = 28,304,809.20/x
  3. Step 3: Cross multiply
    73,758,121.20x = 110,604,004.20 × 28,304,809.20
  4. Step 4: Simplify right side
    73,758,121.20x = 3,130,625,235,636,998.50
  5. Step 5: Solve for x
    x = 3,130,625,235,636,998.50/73,758,121.20
  6. Step 6: Final answer
    x = 42,444,481.84

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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.