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Finding the Fourth Proportional to 472,901.82, 709,345.21 and 220,040.88

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Solution

The fourth proportional to 472,901.82, 709,345.21 and 220,040.88 is: 330,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,901.82 : 709,345.21 = 220,040.88 : x
  2. Step 2: Convert to fraction form
    472,901.82/709,345.21 = 220,040.88/x
  3. Step 3: Cross multiply
    472,901.82x = 709,345.21 × 220,040.88
  4. Step 4: Simplify right side
    472,901.82x = 156,084,943,131.98
  5. Step 5: Solve for x
    x = 156,084,943,131.98/472,901.82
  6. Step 6: Final answer
    x = 330,057.82

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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.