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Finding the Fourth Proportional to 151,843.68, 209,347.74 and 104,011.56

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Solution

The fourth proportional to 151,843.68, 209,347.74 and 104,011.56 is: 143,401.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,843.68 : 209,347.74 = 104,011.56 : x
  2. Step 2: Convert to fraction form
    151,843.68/209,347.74 = 104,011.56/x
  3. Step 3: Cross multiply
    151,843.68x = 209,347.74 × 104,011.56
  4. Step 4: Simplify right side
    151,843.68x = 21,774,585,019.87
  5. Step 5: Solve for x
    x = 21,774,585,019.87/151,843.68
  6. Step 6: Final answer
    x = 143,401.33

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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.