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Finding the Fourth Proportional to 443,573.79, 611,918.44 and 290,545.75

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Solution

The fourth proportional to 443,573.79, 611,918.44 and 290,545.75 is: 400,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,573.79 : 611,918.44 = 290,545.75 : x
  2. Step 2: Convert to fraction form
    443,573.79/611,918.44 = 290,545.75/x
  3. Step 3: Cross multiply
    443,573.79x = 611,918.44 × 290,545.75
  4. Step 4: Simplify right side
    443,573.79x = 177,790,302,088.63
  5. Step 5: Solve for x
    x = 177,790,302,088.63/443,573.79
  6. Step 6: Final answer
    x = 400,813.36

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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.