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Finding the Fourth Proportional to 353,118.83, 487,309.53 and 191,974.49

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Solution

The fourth proportional to 353,118.83, 487,309.53 and 191,974.49 is: 264,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,118.83 : 487,309.53 = 191,974.49 : x
  2. Step 2: Convert to fraction form
    353,118.83/487,309.53 = 191,974.49/x
  3. Step 3: Cross multiply
    353,118.83x = 487,309.53 × 191,974.49
  4. Step 4: Simplify right side
    353,118.83x = 93,550,999,712.16
  5. Step 5: Solve for x
    x = 93,550,999,712.16/353,118.83
  6. Step 6: Final answer
    x = 264,927.81

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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.