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Finding the Fourth Proportional to 372,242.80, 558,364.20 and 122,892.40

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Solution

The fourth proportional to 372,242.80, 558,364.20 and 122,892.40 is: 184,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,242.80 : 558,364.20 = 122,892.40 : x
  2. Step 2: Convert to fraction form
    372,242.80/558,364.20 = 122,892.40/x
  3. Step 3: Cross multiply
    372,242.80x = 558,364.20 × 122,892.40
  4. Step 4: Simplify right side
    372,242.80x = 68,618,716,612.08
  5. Step 5: Solve for x
    x = 68,618,716,612.08/372,242.80
  6. Step 6: Final answer
    x = 184,338.60

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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.