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Finding the Fourth Proportional to 483,129.50, 666,780.21 and 292,144.26

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Solution

The fourth proportional to 483,129.50, 666,780.21 and 292,144.26 is: 403,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,129.50 : 666,780.21 = 292,144.26 : x
  2. Step 2: Convert to fraction form
    483,129.50/666,780.21 = 292,144.26/x
  3. Step 3: Cross multiply
    483,129.50x = 666,780.21 × 292,144.26
  4. Step 4: Simplify right side
    483,129.50x = 194,796,011,033.10
  5. Step 5: Solve for x
    x = 194,796,011,033.10/483,129.50
  6. Step 6: Final answer
    x = 403,196.27

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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.