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Finding the Fourth Proportional to 7,338,906.40, 10,972,930.20 and 5,425,718.80

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Solution

The fourth proportional to 7,338,906.40, 10,972,930.20 and 5,425,718.80 is: 8,112,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338,906.40 : 10,972,930.20 = 5,425,718.80 : x
  2. Step 2: Convert to fraction form
    7,338,906.40/10,972,930.20 = 5,425,718.80/x
  3. Step 3: Cross multiply
    7,338,906.40x = 10,972,930.20 × 5,425,718.80
  4. Step 4: Simplify right side
    7,338,906.40x = 59,536,033,677,227.76
  5. Step 5: Solve for x
    x = 59,536,033,677,227.76/7,338,906.40
  6. Step 6: Final answer
    x = 8,112,384.93

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1.5x scale

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.