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Finding the Fourth Proportional to 1,487,816.70, 2,231,725.05 and 1,487,816.70

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Solution

The fourth proportional to 1,487,816.70, 2,231,725.05 and 1,487,816.70 is: 2,231,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,816.70 : 2,231,725.05 = 1,487,816.70 : x
  2. Step 2: Convert to fraction form
    1,487,816.70/2,231,725.05 = 1,487,816.70/x
  3. Step 3: Cross multiply
    1,487,816.70x = 2,231,725.05 × 1,487,816.70
  4. Step 4: Simplify right side
    1,487,816.70x = 3,320,397,799,198.33
  5. Step 5: Solve for x
    x = 3,320,397,799,198.33/1,487,816.70
  6. Step 6: Final answer
    x = 2,231,725.05

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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.