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Finding the Fourth Proportional to 399,362.64, 598,843.64 and 133,029.52

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Solution

The fourth proportional to 399,362.64, 598,843.64 and 133,029.52 is: 199,477.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,362.64 : 598,843.64 = 133,029.52 : x
  2. Step 2: Convert to fraction form
    399,362.64/598,843.64 = 133,029.52/x
  3. Step 3: Cross multiply
    399,362.64x = 598,843.64 × 133,029.52
  4. Step 4: Simplify right side
    399,362.64x = 79,663,881,984.25
  5. Step 5: Solve for x
    x = 79,663,881,984.25/399,362.64
  6. Step 6: Final answer
    x = 199,477.55

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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.