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Finding the Fourth Proportional to 100,068.85, 150,090.32 and 37,731.25

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Solution

The fourth proportional to 100,068.85, 150,090.32 and 37,731.25 is: 56,591.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,068.85 : 150,090.32 = 37,731.25 : x
  2. Step 2: Convert to fraction form
    100,068.85/150,090.32 = 37,731.25/x
  3. Step 3: Cross multiply
    100,068.85x = 150,090.32 × 37,731.25
  4. Step 4: Simplify right side
    100,068.85x = 5,663,095,197.84
  5. Step 5: Solve for x
    x = 5,663,095,197.84/100,068.85
  6. Step 6: Final answer
    x = 56,591.99

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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.