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Finding the Fourth Proportional to 201,128.64, 301,707.36 and 60,898.20

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Solution

The fourth proportional to 201,128.64, 301,707.36 and 60,898.20 is: 91,351.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,128.64 : 301,707.36 = 60,898.20 : x
  2. Step 2: Convert to fraction form
    201,128.64/301,707.36 = 60,898.20/x
  3. Step 3: Cross multiply
    201,128.64x = 301,707.36 × 60,898.20
  4. Step 4: Simplify right side
    201,128.64x = 18,373,435,150.75
  5. Step 5: Solve for x
    x = 18,373,435,150.75/201,128.64
  6. Step 6: Final answer
    x = 91,351.66

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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.