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Finding the Fourth Proportional to 290,684.89, 400,895.35 and 188,609.77

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Solution

The fourth proportional to 290,684.89, 400,895.35 and 188,609.77 is: 260,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,684.89 : 400,895.35 = 188,609.77 : x
  2. Step 2: Convert to fraction form
    290,684.89/400,895.35 = 188,609.77/x
  3. Step 3: Cross multiply
    290,684.89x = 400,895.35 × 188,609.77
  4. Step 4: Simplify right side
    290,684.89x = 75,612,779,757.57
  5. Step 5: Solve for x
    x = 75,612,779,757.57/290,684.89
  6. Step 6: Final answer
    x = 260,119.40

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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.