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Finding the Fourth Proportional to 4,920,991.65, 7,381,487.48 and 4,920,991.65

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Solution

The fourth proportional to 4,920,991.65, 7,381,487.48 and 4,920,991.65 is: 7,381,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920,991.65 : 7,381,487.48 = 4,920,991.65 : x
  2. Step 2: Convert to fraction form
    4,920,991.65/7,381,487.48 = 4,920,991.65/x
  3. Step 3: Cross multiply
    4,920,991.65x = 7,381,487.48 × 4,920,991.65
  4. Step 4: Simplify right side
    4,920,991.65x = 36,324,238,229,054.59
  5. Step 5: Solve for x
    x = 36,324,238,229,054.59/4,920,991.65
  6. Step 6: Final answer
    x = 7,381,487.48

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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.