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Finding the Fourth Proportional to 290,166.27, 400,326.78 and 189,622.59

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Solution

The fourth proportional to 290,166.27, 400,326.78 and 189,622.59 is: 261,612.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,166.27 : 400,326.78 = 189,622.59 : x
  2. Step 2: Convert to fraction form
    290,166.27/400,326.78 = 189,622.59/x
  3. Step 3: Cross multiply
    290,166.27x = 400,326.78 × 189,622.59
  4. Step 4: Simplify right side
    290,166.27x = 75,911,000,869.96
  5. Step 5: Solve for x
    x = 75,911,000,869.96/290,166.27
  6. Step 6: Final answer
    x = 261,612.08

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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.