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Finding the Fourth Proportional to 613,044.71, 919,699.41 and 186,613.88

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Solution

The fourth proportional to 613,044.71, 919,699.41 and 186,613.88 is: 279,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,044.71 : 919,699.41 = 186,613.88 : x
  2. Step 2: Convert to fraction form
    613,044.71/919,699.41 = 186,613.88/x
  3. Step 3: Cross multiply
    613,044.71x = 919,699.41 × 186,613.88
  4. Step 4: Simplify right side
    613,044.71x = 171,628,670,735.31
  5. Step 5: Solve for x
    x = 171,628,670,735.31/613,044.71
  6. Step 6: Final answer
    x = 279,961.10

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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.