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Finding the Fourth Proportional to 389,781.44, 584,672.16 and 94,293.44

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Solution

The fourth proportional to 389,781.44, 584,672.16 and 94,293.44 is: 141,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,781.44 : 584,672.16 = 94,293.44 : x
  2. Step 2: Convert to fraction form
    389,781.44/584,672.16 = 94,293.44/x
  3. Step 3: Cross multiply
    389,781.44x = 584,672.16 × 94,293.44
  4. Step 4: Simplify right side
    389,781.44x = 55,130,749,238.63
  5. Step 5: Solve for x
    x = 55,130,749,238.63/389,781.44
  6. Step 6: Final answer
    x = 141,440.16

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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.