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Finding the Fourth Proportional to 381,287.89, 526,177.91 and 211,522.01

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Solution

The fourth proportional to 381,287.89, 526,177.91 and 211,522.01 is: 291,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,287.89 : 526,177.91 = 211,522.01 : x
  2. Step 2: Convert to fraction form
    381,287.89/526,177.91 = 211,522.01/x
  3. Step 3: Cross multiply
    381,287.89x = 526,177.91 × 211,522.01
  4. Step 4: Simplify right side
    381,287.89x = 111,298,208,083.19
  5. Step 5: Solve for x
    x = 111,298,208,083.19/381,287.89
  6. Step 6: Final answer
    x = 291,900.72

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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.