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Finding the Fourth Proportional to 201,455.99, 278,003.46 and 110,811.95

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Solution

The fourth proportional to 201,455.99, 278,003.46 and 110,811.95 is: 152,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,455.99 : 278,003.46 = 110,811.95 : x
  2. Step 2: Convert to fraction form
    201,455.99/278,003.46 = 110,811.95/x
  3. Step 3: Cross multiply
    201,455.99x = 278,003.46 × 110,811.95
  4. Step 4: Simplify right side
    201,455.99x = 30,806,105,509.35
  5. Step 5: Solve for x
    x = 30,806,105,509.35/201,455.99
  6. Step 6: Final answer
    x = 152,917.30

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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.