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Finding the Fourth Proportional to 374,876.64, 517,342.56 and 213,755.52

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Solution

The fourth proportional to 374,876.64, 517,342.56 and 213,755.52 is: 294,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,876.64 : 517,342.56 = 213,755.52 : x
  2. Step 2: Convert to fraction form
    374,876.64/517,342.56 = 213,755.52/x
  3. Step 3: Cross multiply
    374,876.64x = 517,342.56 × 213,755.52
  4. Step 4: Simplify right side
    374,876.64x = 110,584,827,930.93
  5. Step 5: Solve for x
    x = 110,584,827,930.93/374,876.64
  6. Step 6: Final answer
    x = 294,989.91

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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.