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Finding the Fourth Proportional to 91,189.40, 136,690.40 and 35,014.34

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Solution

The fourth proportional to 91,189.40, 136,690.40 and 35,014.34 is: 52,485.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,189.40 : 136,690.40 = 35,014.34 : x
  2. Step 2: Convert to fraction form
    91,189.40/136,690.40 = 35,014.34/x
  3. Step 3: Cross multiply
    91,189.40x = 136,690.40 × 35,014.34
  4. Step 4: Simplify right side
    91,189.40x = 4,786,124,569.60
  5. Step 5: Solve for x
    x = 4,786,124,569.60/91,189.40
  6. Step 6: Final answer
    x = 52,485.54

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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.