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Finding the Fourth Proportional to 290,665.99, 401,141.52 and 174,383.81

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Solution

The fourth proportional to 290,665.99, 401,141.52 and 174,383.81 is: 240,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,665.99 : 401,141.52 = 174,383.81 : x
  2. Step 2: Convert to fraction form
    290,665.99/401,141.52 = 174,383.81/x
  3. Step 3: Cross multiply
    290,665.99x = 401,141.52 × 174,383.81
  4. Step 4: Simplify right side
    290,665.99x = 69,952,584,601.08
  5. Step 5: Solve for x
    x = 69,952,584,601.08/290,665.99
  6. Step 6: Final answer
    x = 240,663.13

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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.