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Finding the Fourth Proportional to 250,961.86, 346,327.95 and 137,791.90

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Solution

The fourth proportional to 250,961.86, 346,327.95 and 137,791.90 is: 190,153.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,961.86 : 346,327.95 = 137,791.90 : x
  2. Step 2: Convert to fraction form
    250,961.86/346,327.95 = 137,791.90/x
  3. Step 3: Cross multiply
    250,961.86x = 346,327.95 × 137,791.90
  4. Step 4: Simplify right side
    250,961.86x = 47,721,186,253.61
  5. Step 5: Solve for x
    x = 47,721,186,253.61/250,961.86
  6. Step 6: Final answer
    x = 190,153.14

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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.