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Finding the Fourth Proportional to 191,518.97, 264,287.65 and 109,788.63

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Solution

The fourth proportional to 191,518.97, 264,287.65 and 109,788.63 is: 151,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,518.97 : 264,287.65 = 109,788.63 : x
  2. Step 2: Convert to fraction form
    191,518.97/264,287.65 = 109,788.63/x
  3. Step 3: Cross multiply
    191,518.97x = 264,287.65 × 109,788.63
  4. Step 4: Simplify right side
    191,518.97x = 29,015,778,043.55
  5. Step 5: Solve for x
    x = 29,015,778,043.55/191,518.97
  6. Step 6: Final answer
    x = 151,503.42

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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.