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Finding the Fourth Proportional to 363,893.40, 545,840.64 and 127,235.70

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Solution

The fourth proportional to 363,893.40, 545,840.64 and 127,235.70 is: 190,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,893.40 : 545,840.64 = 127,235.70 : x
  2. Step 2: Convert to fraction form
    363,893.40/545,840.64 = 127,235.70/x
  3. Step 3: Cross multiply
    363,893.40x = 545,840.64 × 127,235.70
  4. Step 4: Simplify right side
    363,893.40x = 69,450,415,918.85
  5. Step 5: Solve for x
    x = 69,450,415,918.85/363,893.40
  6. Step 6: Final answer
    x = 190,853.74

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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.