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Finding the Fourth Proportional to 186,893.57, 280,344.35 and 66,958.34

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Solution

The fourth proportional to 186,893.57, 280,344.35 and 66,958.34 is: 100,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,893.57 : 280,344.35 = 66,958.34 : x
  2. Step 2: Convert to fraction form
    186,893.57/280,344.35 = 66,958.34/x
  3. Step 3: Cross multiply
    186,893.57x = 280,344.35 × 66,958.34
  4. Step 4: Simplify right side
    186,893.57x = 18,771,391,070.05
  5. Step 5: Solve for x
    x = 18,771,391,070.05/186,893.57
  6. Step 6: Final answer
    x = 100,438.93

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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.