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Finding the Fourth Proportional to 292,715.52, 403,955.40 and 165,388.56

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Solution

The fourth proportional to 292,715.52, 403,955.40 and 165,388.56 is: 228,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,715.52 : 403,955.40 = 165,388.56 : x
  2. Step 2: Convert to fraction form
    292,715.52/403,955.40 = 165,388.56/x
  3. Step 3: Cross multiply
    292,715.52x = 403,955.40 × 165,388.56
  4. Step 4: Simplify right side
    292,715.52x = 66,809,601,910.22
  5. Step 5: Solve for x
    x = 66,809,601,910.22/292,715.52
  6. Step 6: Final answer
    x = 228,240.72

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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.