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Finding the Fourth Proportional to 123,324.60, 184,986.90 and 73,428.60

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Solution

The fourth proportional to 123,324.60, 184,986.90 and 73,428.60 is: 110,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,324.60 : 184,986.90 = 73,428.60 : x
  2. Step 2: Convert to fraction form
    123,324.60/184,986.90 = 73,428.60/x
  3. Step 3: Cross multiply
    123,324.60x = 184,986.90 × 73,428.60
  4. Step 4: Simplify right side
    123,324.60x = 13,583,329,085.34
  5. Step 5: Solve for x
    x = 13,583,329,085.34/123,324.60
  6. Step 6: Final answer
    x = 110,142.90

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1.5x scale

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.