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Finding the Fourth Proportional to 205,059.60, 307,589.40 and 191,840.40

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Solution

The fourth proportional to 205,059.60, 307,589.40 and 191,840.40 is: 287,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,059.60 : 307,589.40 = 191,840.40 : x
  2. Step 2: Convert to fraction form
    205,059.60/307,589.40 = 191,840.40/x
  3. Step 3: Cross multiply
    205,059.60x = 307,589.40 × 191,840.40
  4. Step 4: Simplify right side
    205,059.60x = 59,008,073,531.76
  5. Step 5: Solve for x
    x = 59,008,073,531.76/205,059.60
  6. Step 6: Final answer
    x = 287,760.60

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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.