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Finding the Fourth Proportional to 404,644.75, 606,996.30 and 155,326.75

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Solution

The fourth proportional to 404,644.75, 606,996.30 and 155,326.75 is: 233,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,644.75 : 606,996.30 = 155,326.75 : x
  2. Step 2: Convert to fraction form
    404,644.75/606,996.30 = 155,326.75/x
  3. Step 3: Cross multiply
    404,644.75x = 606,996.30 × 155,326.75
  4. Step 4: Simplify right side
    404,644.75x = 94,282,762,541.03
  5. Step 5: Solve for x
    x = 94,282,762,541.03/404,644.75
  6. Step 6: Final answer
    x = 233,001.32

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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.