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Finding the Fourth Proportional to 123,045.60, 184,568.40 and 83,679.60

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Solution

The fourth proportional to 123,045.60, 184,568.40 and 83,679.60 is: 125,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,045.60 : 184,568.40 = 83,679.60 : x
  2. Step 2: Convert to fraction form
    123,045.60/184,568.40 = 83,679.60/x
  3. Step 3: Cross multiply
    123,045.60x = 184,568.40 × 83,679.60
  4. Step 4: Simplify right side
    123,045.60x = 15,444,609,884.64
  5. Step 5: Solve for x
    x = 15,444,609,884.64/123,045.60
  6. Step 6: Final answer
    x = 125,519.40

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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.