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Finding the Fourth Proportional to 189,173.92, 261,060.80 and 104,289.12

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Solution

The fourth proportional to 189,173.92, 261,060.80 and 104,289.12 is: 143,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,173.92 : 261,060.80 = 104,289.12 : x
  2. Step 2: Convert to fraction form
    189,173.92/261,060.80 = 104,289.12/x
  3. Step 3: Cross multiply
    189,173.92x = 261,060.80 × 104,289.12
  4. Step 4: Simplify right side
    189,173.92x = 27,225,801,098.50
  5. Step 5: Solve for x
    x = 27,225,801,098.50/189,173.92
  6. Step 6: Final answer
    x = 143,919.42

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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.