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Finding the Fourth Proportional to 290,911.93, 401,457.24 and 161,862.76

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Solution

The fourth proportional to 290,911.93, 401,457.24 and 161,862.76 is: 223,369.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,911.93 : 401,457.24 = 161,862.76 : x
  2. Step 2: Convert to fraction form
    290,911.93/401,457.24 = 161,862.76/x
  3. Step 3: Cross multiply
    290,911.93x = 401,457.24 × 161,862.76
  4. Step 4: Simplify right side
    290,911.93x = 64,980,974,676.77
  5. Step 5: Solve for x
    x = 64,980,974,676.77/290,911.93
  6. Step 6: Final answer
    x = 223,369.92

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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.