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Finding the Fourth Proportional to 201,143.88, 277,578.66 and 111,719.88

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Solution

The fourth proportional to 201,143.88, 277,578.66 and 111,719.88 is: 154,173.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,143.88 : 277,578.66 = 111,719.88 : x
  2. Step 2: Convert to fraction form
    201,143.88/277,578.66 = 111,719.88/x
  3. Step 3: Cross multiply
    201,143.88x = 277,578.66 × 111,719.88
  4. Step 4: Simplify right side
    201,143.88x = 31,011,054,585.76
  5. Step 5: Solve for x
    x = 31,011,054,585.76/201,143.88
  6. Step 6: Final answer
    x = 154,173.49

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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.