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Finding the Fourth Proportional to 290,166.77, 400,327.47 and 189,623.09

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Solution

The fourth proportional to 290,166.77, 400,327.47 and 189,623.09 is: 261,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,166.77 : 400,327.47 = 189,623.09 : x
  2. Step 2: Convert to fraction form
    290,166.77/400,327.47 = 189,623.09/x
  3. Step 3: Cross multiply
    290,166.77x = 400,327.47 × 189,623.09
  4. Step 4: Simplify right side
    290,166.77x = 75,911,329,871.64
  5. Step 5: Solve for x
    x = 75,911,329,871.64/290,166.77
  6. Step 6: Final answer
    x = 261,612.77

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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.