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Finding the Fourth Proportional to 483,621.89, 667,345.19 and 279,641.93

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Solution

The fourth proportional to 483,621.89, 667,345.19 and 279,641.93 is: 385,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,621.89 : 667,345.19 = 279,641.93 : x
  2. Step 2: Convert to fraction form
    483,621.89/667,345.19 = 279,641.93/x
  3. Step 3: Cross multiply
    483,621.89x = 667,345.19 × 279,641.93
  4. Step 4: Simplify right side
    483,621.89x = 186,617,692,172.88
  5. Step 5: Solve for x
    x = 186,617,692,172.88/483,621.89
  6. Step 6: Final answer
    x = 385,875.20

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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.