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Finding the Fourth Proportional to 100,090.26, 149,979.87 and 63,076.50

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Solution

The fourth proportional to 100,090.26, 149,979.87 and 63,076.50 is: 94,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,090.26 : 149,979.87 = 63,076.50 : x
  2. Step 2: Convert to fraction form
    100,090.26/149,979.87 = 63,076.50/x
  3. Step 3: Cross multiply
    100,090.26x = 149,979.87 × 63,076.50
  4. Step 4: Simplify right side
    100,090.26x = 9,460,205,270.06
  5. Step 5: Solve for x
    x = 9,460,205,270.06/100,090.26
  6. Step 6: Final answer
    x = 94,516.74

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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.