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Finding the Fourth Proportional to 5,436,786.62, 7,502,793.54 and 2,989,555.50

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Solution

The fourth proportional to 5,436,786.62, 7,502,793.54 and 2,989,555.50 is: 4,125,601.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436,786.62 : 7,502,793.54 = 2,989,555.50 : x
  2. Step 2: Convert to fraction form
    5,436,786.62/7,502,793.54 = 2,989,555.50/x
  3. Step 3: Cross multiply
    5,436,786.62x = 7,502,793.54 × 2,989,555.50
  4. Step 4: Simplify right side
    5,436,786.62x = 22,430,017,692,871.47
  5. Step 5: Solve for x
    x = 22,430,017,692,871.47/5,436,786.62
  6. Step 6: Final answer
    x = 4,125,601.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.