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Finding the Fourth Proportional to 201,640.53, 278,271.87 and 111,004.93

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Solution

The fourth proportional to 201,640.53, 278,271.87 and 111,004.93 is: 153,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,640.53 : 278,271.87 = 111,004.93 : x
  2. Step 2: Convert to fraction form
    201,640.53/278,271.87 = 111,004.93/x
  3. Step 3: Cross multiply
    201,640.53x = 278,271.87 × 111,004.93
  4. Step 4: Simplify right side
    201,640.53x = 30,889,549,537.99
  5. Step 5: Solve for x
    x = 30,889,549,537.99/201,640.53
  6. Step 6: Final answer
    x = 153,191.18

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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.