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Finding the Fourth Proportional to 184,861.49, 255,108.85 and 99,978.55

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Solution

The fourth proportional to 184,861.49, 255,108.85 and 99,978.55 is: 137,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,861.49 : 255,108.85 = 99,978.55 : x
  2. Step 2: Convert to fraction form
    184,861.49/255,108.85 = 99,978.55/x
  3. Step 3: Cross multiply
    184,861.49x = 255,108.85 × 99,978.55
  4. Step 4: Simplify right side
    184,861.49x = 25,505,413,546.49
  5. Step 5: Solve for x
    x = 25,505,413,546.49/184,861.49
  6. Step 6: Final answer
    x = 137,970.40

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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.