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Finding the Fourth Proportional to 91,140, 136,770.75 and 35,026.44

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Solution

The fourth proportional to 91,140, 136,770.75 and 35,026.44 is: 52,563.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,140 : 136,770.75 = 35,026.44 : x
  2. Step 2: Convert to fraction form
    91,140/136,770.75 = 35,026.44/x
  3. Step 3: Cross multiply
    91,140x = 136,770.75 × 35,026.44
  4. Step 4: Simplify right side
    91,140x = 4,790,592,468.63
  5. Step 5: Solve for x
    x = 4,790,592,468.63/91,140
  6. Step 6: Final answer
    x = 52,563.01

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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.