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Finding the Fourth Proportional to 122,812.60, 184,316.10 and 47,968.60

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Solution

The fourth proportional to 122,812.60, 184,316.10 and 47,968.60 is: 71,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,812.60 : 184,316.10 = 47,968.60 : x
  2. Step 2: Convert to fraction form
    122,812.60/184,316.10 = 47,968.60/x
  3. Step 3: Cross multiply
    122,812.60x = 184,316.10 × 47,968.60
  4. Step 4: Simplify right side
    122,812.60x = 8,841,385,274.46
  5. Step 5: Solve for x
    x = 8,841,385,274.46/122,812.60
  6. Step 6: Final answer
    x = 71,990.86

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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.