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Finding the Fourth Proportional to 218,364.07, 327,021.22 and 124,585.51

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Solution

The fourth proportional to 218,364.07, 327,021.22 and 124,585.51 is: 186,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,364.07 : 327,021.22 = 124,585.51 : x
  2. Step 2: Convert to fraction form
    218,364.07/327,021.22 = 124,585.51/x
  3. Step 3: Cross multiply
    218,364.07x = 327,021.22 × 124,585.51
  4. Step 4: Simplify right side
    218,364.07x = 40,742,105,474.52
  5. Step 5: Solve for x
    x = 40,742,105,474.52/218,364.07
  6. Step 6: Final answer
    x = 186,578.80

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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.