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Finding the Fourth Proportional to 191,906.08, 287,735.93 and 79,663.77

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Solution

The fourth proportional to 191,906.08, 287,735.93 and 79,663.77 is: 119,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,906.08 : 287,735.93 = 79,663.77 : x
  2. Step 2: Convert to fraction form
    191,906.08/287,735.93 = 79,663.77/x
  3. Step 3: Cross multiply
    191,906.08x = 287,735.93 × 79,663.77
  4. Step 4: Simplify right side
    191,906.08x = 22,922,128,948.26
  5. Step 5: Solve for x
    x = 22,922,128,948.26/191,906.08
  6. Step 6: Final answer
    x = 119,444.52

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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.