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Finding the Fourth Proportional to 363,391.20, 545,111.10 and 123,501.60

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Solution

The fourth proportional to 363,391.20, 545,111.10 and 123,501.60 is: 185,260.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,391.20 : 545,111.10 = 123,501.60 : x
  2. Step 2: Convert to fraction form
    363,391.20/545,111.10 = 123,501.60/x
  3. Step 3: Cross multiply
    363,391.20x = 545,111.10 × 123,501.60
  4. Step 4: Simplify right side
    363,391.20x = 67,322,093,027.76
  5. Step 5: Solve for x
    x = 67,322,093,027.76/363,391.20
  6. Step 6: Final answer
    x = 185,260.66

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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.