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Finding the Fourth Proportional to 123,313.60, 184,862.40 and 83,742.40

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Solution

The fourth proportional to 123,313.60, 184,862.40 and 83,742.40 is: 125,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,313.60 : 184,862.40 = 83,742.40 : x
  2. Step 2: Convert to fraction form
    123,313.60/184,862.40 = 83,742.40/x
  3. Step 3: Cross multiply
    123,313.60x = 184,862.40 × 83,742.40
  4. Step 4: Simplify right side
    123,313.60x = 15,480,821,045.76
  5. Step 5: Solve for x
    x = 15,480,821,045.76/123,313.60
  6. Step 6: Final answer
    x = 125,540.26

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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.