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Finding the Fourth Proportional to 189,027.32, 260,895.48 and 108,509.30

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Solution

The fourth proportional to 189,027.32, 260,895.48 and 108,509.30 is: 149,764.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,027.32 : 260,895.48 = 108,509.30 : x
  2. Step 2: Convert to fraction form
    189,027.32/260,895.48 = 108,509.30/x
  3. Step 3: Cross multiply
    189,027.32x = 260,895.48 × 108,509.30
  4. Step 4: Simplify right side
    189,027.32x = 28,309,585,907.96
  5. Step 5: Solve for x
    x = 28,309,585,907.96/189,027.32
  6. Step 6: Final answer
    x = 149,764.52

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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.