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Finding the Fourth Proportional to 122,693.80, 184,040.70 and 70,108.60

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Solution

The fourth proportional to 122,693.80, 184,040.70 and 70,108.60 is: 105,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,693.80 : 184,040.70 = 70,108.60 : x
  2. Step 2: Convert to fraction form
    122,693.80/184,040.70 = 70,108.60/x
  3. Step 3: Cross multiply
    122,693.80x = 184,040.70 × 70,108.60
  4. Step 4: Simplify right side
    122,693.80x = 12,902,835,820.02
  5. Step 5: Solve for x
    x = 12,902,835,820.02/122,693.80
  6. Step 6: Final answer
    x = 105,162.90

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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.