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Finding the Fourth Proportional to 210,033.20, 315,049.80 and 210,033.20

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Solution

The fourth proportional to 210,033.20, 315,049.80 and 210,033.20 is: 315,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,033.20 : 315,049.80 = 210,033.20 : x
  2. Step 2: Convert to fraction form
    210,033.20/315,049.80 = 210,033.20/x
  3. Step 3: Cross multiply
    210,033.20x = 315,049.80 × 210,033.20
  4. Step 4: Simplify right side
    210,033.20x = 66,170,917,653.36
  5. Step 5: Solve for x
    x = 66,170,917,653.36/210,033.20
  6. Step 6: Final answer
    x = 315,049.80

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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.