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Finding the Fourth Proportional to 401,470.96, 554,021.64 and 248,468.44

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Solution

The fourth proportional to 401,470.96, 554,021.64 and 248,468.44 is: 342,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,470.96 : 554,021.64 = 248,468.44 : x
  2. Step 2: Convert to fraction form
    401,470.96/554,021.64 = 248,468.44/x
  3. Step 3: Cross multiply
    401,470.96x = 554,021.64 × 248,468.44
  4. Step 4: Simplify right side
    401,470.96x = 137,656,892,617.04
  5. Step 5: Solve for x
    x = 137,656,892,617.04/401,470.96
  6. Step 6: Final answer
    x = 342,881.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.