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Finding the Fourth Proportional to 191,937.70, 287,906.55 and 98,625.70

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Solution

The fourth proportional to 191,937.70, 287,906.55 and 98,625.70 is: 147,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,937.70 : 287,906.55 = 98,625.70 : x
  2. Step 2: Convert to fraction form
    191,937.70/287,906.55 = 98,625.70/x
  3. Step 3: Cross multiply
    191,937.70x = 287,906.55 × 98,625.70
  4. Step 4: Simplify right side
    191,937.70x = 28,394,985,028.34
  5. Step 5: Solve for x
    x = 28,394,985,028.34/191,937.70
  6. Step 6: Final answer
    x = 147,938.55

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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.