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Finding the Fourth Proportional to 353,126.64, 487,317.87 and 191,981.82

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Solution

The fourth proportional to 353,126.64, 487,317.87 and 191,981.82 is: 264,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,126.64 : 487,317.87 = 191,981.82 : x
  2. Step 2: Convert to fraction form
    353,126.64/487,317.87 = 191,981.82/x
  3. Step 3: Cross multiply
    353,126.64x = 487,317.87 × 191,981.82
  4. Step 4: Simplify right side
    353,126.64x = 93,556,171,601.12
  5. Step 5: Solve for x
    x = 93,556,171,601.12/353,126.64
  6. Step 6: Final answer
    x = 264,936.60

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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.