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Finding the Fourth Proportional to 136,893.60, 205,311.60 and 58,010.40

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Solution

The fourth proportional to 136,893.60, 205,311.60 and 58,010.40 is: 87,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,893.60 : 205,311.60 = 58,010.40 : x
  2. Step 2: Convert to fraction form
    136,893.60/205,311.60 = 58,010.40/x
  3. Step 3: Cross multiply
    136,893.60x = 205,311.60 × 58,010.40
  4. Step 4: Simplify right side
    136,893.60x = 11,910,208,040.64
  5. Step 5: Solve for x
    x = 11,910,208,040.64/136,893.60
  6. Step 6: Final answer
    x = 87,003.40

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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.