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Finding the Fourth Proportional to 400,392.43, 552,541.60 and 219,104.39

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Solution

The fourth proportional to 400,392.43, 552,541.60 and 219,104.39 is: 302,364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,392.43 : 552,541.60 = 219,104.39 : x
  2. Step 2: Convert to fraction form
    400,392.43/552,541.60 = 219,104.39/x
  3. Step 3: Cross multiply
    400,392.43x = 552,541.60 × 219,104.39
  4. Step 4: Simplify right side
    400,392.43x = 121,064,291,051.22
  5. Step 5: Solve for x
    x = 121,064,291,051.22/400,392.43
  6. Step 6: Final answer
    x = 302,364.09

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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.