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Finding the Fourth Proportional to 189,363.70, 261,416.59 and 117,766.79

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Solution

The fourth proportional to 189,363.70, 261,416.59 and 117,766.79 is: 162,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,363.70 : 261,416.59 = 117,766.79 : x
  2. Step 2: Convert to fraction form
    189,363.70/261,416.59 = 117,766.79/x
  3. Step 3: Cross multiply
    189,363.70x = 261,416.59 × 117,766.79
  4. Step 4: Simplify right side
    189,363.70x = 30,786,191,349.96
  5. Step 5: Solve for x
    x = 30,786,191,349.96/189,363.70
  6. Step 6: Final answer
    x = 162,577.05

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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.