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Finding the Fourth Proportional to 290,683.89, 400,893.98 and 188,608.77

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Solution

The fourth proportional to 290,683.89, 400,893.98 and 188,608.77 is: 260,118.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,683.89 : 400,893.98 = 188,608.77 : x
  2. Step 2: Convert to fraction form
    290,683.89/400,893.98 = 188,608.77/x
  3. Step 3: Cross multiply
    290,683.89x = 400,893.98 × 188,608.77
  4. Step 4: Simplify right side
    290,683.89x = 75,612,119,525.16
  5. Step 5: Solve for x
    x = 75,612,119,525.16/290,683.89
  6. Step 6: Final answer
    x = 260,118.03

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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.