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Finding the Fourth Proportional to 576,335.19, 864,544.31 and 221,349.22

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Solution

The fourth proportional to 576,335.19, 864,544.31 and 221,349.22 is: 332,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,335.19 : 864,544.31 = 221,349.22 : x
  2. Step 2: Convert to fraction form
    576,335.19/864,544.31 = 221,349.22/x
  3. Step 3: Cross multiply
    576,335.19x = 864,544.31 × 221,349.22
  4. Step 4: Simplify right side
    576,335.19x = 191,366,208,673.94
  5. Step 5: Solve for x
    x = 191,366,208,673.94/576,335.19
  6. Step 6: Final answer
    x = 332,039.78

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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.