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Finding the Fourth Proportional to 5,280,980.92, 7,921,889.94 and 1,494,487.48

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Solution

The fourth proportional to 5,280,980.92, 7,921,889.94 and 1,494,487.48 is: 2,241,849.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,980.92 : 7,921,889.94 = 1,494,487.48 : x
  2. Step 2: Convert to fraction form
    5,280,980.92/7,921,889.94 = 1,494,487.48/x
  3. Step 3: Cross multiply
    5,280,980.92x = 7,921,889.94 × 1,494,487.48
  4. Step 4: Simplify right side
    5,280,980.92x = 11,839,165,333,267.95
  5. Step 5: Solve for x
    x = 11,839,165,333,267.95/5,280,980.92
  6. Step 6: Final answer
    x = 2,241,849.67

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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.