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Finding the Fourth Proportional to 290,937.54, 401,458.54 and 161,845.51

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Solution

The fourth proportional to 290,937.54, 401,458.54 and 161,845.51 is: 223,327.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,937.54 : 401,458.54 = 161,845.51 : x
  2. Step 2: Convert to fraction form
    290,937.54/401,458.54 = 161,845.51/x
  3. Step 3: Cross multiply
    290,937.54x = 401,458.54 × 161,845.51
  4. Step 4: Simplify right side
    290,937.54x = 64,974,260,142.86
  5. Step 5: Solve for x
    x = 64,974,260,142.86/290,937.54
  6. Step 6: Final answer
    x = 223,327.18

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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.