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Finding the Fourth Proportional to 364,121.42, 544,782.45 and 221,940.91

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Solution

The fourth proportional to 364,121.42, 544,782.45 and 221,940.91 is: 332,058.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,121.42 : 544,782.45 = 221,940.91 : x
  2. Step 2: Convert to fraction form
    364,121.42/544,782.45 = 221,940.91/x
  3. Step 3: Cross multiply
    364,121.42x = 544,782.45 × 221,940.91
  4. Step 4: Simplify right side
    364,121.42x = 120,909,509,981.12
  5. Step 5: Solve for x
    x = 120,909,509,981.12/364,121.42
  6. Step 6: Final answer
    x = 332,058.22

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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.