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Finding the Fourth Proportional to 353,021.64, 487,172.84 and 191,876.66

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Solution

The fourth proportional to 353,021.64, 487,172.84 and 191,876.66 is: 264,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,021.64 : 487,172.84 = 191,876.66 : x
  2. Step 2: Convert to fraction form
    353,021.64/487,172.84 = 191,876.66/x
  3. Step 3: Cross multiply
    353,021.64x = 487,172.84 × 191,876.66
  4. Step 4: Simplify right side
    353,021.64x = 93,477,097,381.91
  5. Step 5: Solve for x
    x = 93,477,097,381.91/353,021.64
  6. Step 6: Final answer
    x = 264,791.41

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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.