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Finding the Fourth Proportional to 199,251.01, 298,699.55 and 77,643.39

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Solution

The fourth proportional to 199,251.01, 298,699.55 and 77,643.39 is: 116,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,251.01 : 298,699.55 = 77,643.39 : x
  2. Step 2: Convert to fraction form
    199,251.01/298,699.55 = 77,643.39/x
  3. Step 3: Cross multiply
    199,251.01x = 298,699.55 × 77,643.39
  4. Step 4: Simplify right side
    199,251.01x = 23,192,045,653.47
  5. Step 5: Solve for x
    x = 23,192,045,653.47/199,251.01
  6. Step 6: Final answer
    x = 116,396.13

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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.