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Finding the Fourth Proportional to 351,816.90, 485,506.08 and 190,675.86

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Solution

The fourth proportional to 351,816.90, 485,506.08 and 190,675.86 is: 263,132.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,816.90 : 485,506.08 = 190,675.86 : x
  2. Step 2: Convert to fraction form
    351,816.90/485,506.08 = 190,675.86/x
  3. Step 3: Cross multiply
    351,816.90x = 485,506.08 × 190,675.86
  4. Step 4: Simplify right side
    351,816.90x = 92,574,289,339.23
  5. Step 5: Solve for x
    x = 92,574,289,339.23/351,816.90
  6. Step 6: Final answer
    x = 263,132.01

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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.