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Finding the Fourth Proportional to 140,561.55, 210,939.53 and 101,146.95

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Solution

The fourth proportional to 140,561.55, 210,939.53 and 101,146.95 is: 151,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,561.55 : 210,939.53 = 101,146.95 : x
  2. Step 2: Convert to fraction form
    140,561.55/210,939.53 = 101,146.95/x
  3. Step 3: Cross multiply
    140,561.55x = 210,939.53 × 101,146.95
  4. Step 4: Simplify right side
    140,561.55x = 21,335,889,588.20
  5. Step 5: Solve for x
    x = 21,335,889,588.20/140,561.55
  6. Step 6: Final answer
    x = 151,790.37

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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.