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Finding the Fourth Proportional to 122,731.80, 184,097.70 and 103,032.60

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Solution

The fourth proportional to 122,731.80, 184,097.70 and 103,032.60 is: 154,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,731.80 : 184,097.70 = 103,032.60 : x
  2. Step 2: Convert to fraction form
    122,731.80/184,097.70 = 103,032.60/x
  3. Step 3: Cross multiply
    122,731.80x = 184,097.70 × 103,032.60
  4. Step 4: Simplify right side
    122,731.80x = 18,968,064,685.02
  5. Step 5: Solve for x
    x = 18,968,064,685.02/122,731.80
  6. Step 6: Final answer
    x = 154,548.90

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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.