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Finding the Fourth Proportional to 189,503.73, 261,515.49 and 104,620.86

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Solution

The fourth proportional to 189,503.73, 261,515.49 and 104,620.86 is: 144,376.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,503.73 : 261,515.49 = 104,620.86 : x
  2. Step 2: Convert to fraction form
    189,503.73/261,515.49 = 104,620.86/x
  3. Step 3: Cross multiply
    189,503.73x = 261,515.49 × 104,620.86
  4. Step 4: Simplify right side
    189,503.73x = 27,359,975,467.12
  5. Step 5: Solve for x
    x = 27,359,975,467.12/189,503.73
  6. Step 6: Final answer
    x = 144,376.98

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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.