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Finding the Fourth Proportional to 133,638.60, 184,421.46 and 74,022.60

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Solution

The fourth proportional to 133,638.60, 184,421.46 and 74,022.60 is: 102,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,638.60 : 184,421.46 = 74,022.60 : x
  2. Step 2: Convert to fraction form
    133,638.60/184,421.46 = 74,022.60/x
  3. Step 3: Cross multiply
    133,638.60x = 184,421.46 × 74,022.60
  4. Step 4: Simplify right side
    133,638.60x = 13,651,355,965.00
  5. Step 5: Solve for x
    x = 13,651,355,965.00/133,638.60
  6. Step 6: Final answer
    x = 102,151.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.