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Finding the Fourth Proportional to 476,012.90, 656,916.18 and 261,162.02

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Solution

The fourth proportional to 476,012.90, 656,916.18 and 261,162.02 is: 360,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,012.90 : 656,916.18 = 261,162.02 : x
  2. Step 2: Convert to fraction form
    476,012.90/656,916.18 = 261,162.02/x
  3. Step 3: Cross multiply
    476,012.90x = 656,916.18 × 261,162.02
  4. Step 4: Simplify right side
    476,012.90x = 171,561,557,202.42
  5. Step 5: Solve for x
    x = 171,561,557,202.42/476,012.90
  6. Step 6: Final answer
    x = 360,413.67

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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.