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Finding the Fourth Proportional to 4,747,889.52, 7,121,843.19 and 1,153,659.51

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Solution

The fourth proportional to 4,747,889.52, 7,121,843.19 and 1,153,659.51 is: 1,730,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747,889.52 : 7,121,843.19 = 1,153,659.51 : x
  2. Step 2: Convert to fraction form
    4,747,889.52/7,121,843.19 = 1,153,659.51/x
  3. Step 3: Cross multiply
    4,747,889.52x = 7,121,843.19 × 1,153,659.51
  4. Step 4: Simplify right side
    4,747,889.52x = 8,216,182,124,872.24
  5. Step 5: Solve for x
    x = 8,216,182,124,872.24/4,747,889.52
  6. Step 6: Final answer
    x = 1,730,491.43

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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.