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Finding the Fourth Proportional to 122,323.60, 183,485.40 and 111,990.03

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Solution

The fourth proportional to 122,323.60, 183,485.40 and 111,990.03 is: 167,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,323.60 : 183,485.40 = 111,990.03 : x
  2. Step 2: Convert to fraction form
    122,323.60/183,485.40 = 111,990.03/x
  3. Step 3: Cross multiply
    122,323.60x = 183,485.40 × 111,990.03
  4. Step 4: Simplify right side
    122,323.60x = 20,548,534,533.14
  5. Step 5: Solve for x
    x = 20,548,534,533.14/122,323.60
  6. Step 6: Final answer
    x = 167,985.04

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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.