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Finding the Fourth Proportional to 66,928,924.04, 100,397,998.04 and 28,028,208.68

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Solution

The fourth proportional to 66,928,924.04, 100,397,998.04 and 28,028,208.68 is: 42,044,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928,924.04 : 100,397,998.04 = 28,028,208.68 : x
  2. Step 2: Convert to fraction form
    66,928,924.04/100,397,998.04 = 28,028,208.68/x
  3. Step 3: Cross multiply
    66,928,924.04x = 100,397,998.04 × 28,028,208.68
  4. Step 4: Simplify right side
    66,928,924.04x = 2,813,976,040,119,351
  5. Step 5: Solve for x
    x = 2,813,976,040,119,351/66,928,924.04
  6. Step 6: Final answer
    x = 42,044,244.41

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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.