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Finding the Fourth Proportional to 191,605.85, 264,416.15 and 111,080.05

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Solution

The fourth proportional to 191,605.85, 264,416.15 and 111,080.05 is: 153,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,605.85 : 264,416.15 = 111,080.05 : x
  2. Step 2: Convert to fraction form
    191,605.85/264,416.15 = 111,080.05/x
  3. Step 3: Cross multiply
    191,605.85x = 264,416.15 × 111,080.05
  4. Step 4: Simplify right side
    191,605.85x = 29,371,359,162.81
  5. Step 5: Solve for x
    x = 29,371,359,162.81/191,605.85
  6. Step 6: Final answer
    x = 153,290.51

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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.