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Finding the Fourth Proportional to 338,889.53, 507,979.60 and 114,172.31

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Solution

The fourth proportional to 338,889.53, 507,979.60 and 114,172.31 is: 171,138.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,889.53 : 507,979.60 = 114,172.31 : x
  2. Step 2: Convert to fraction form
    338,889.53/507,979.60 = 114,172.31/x
  3. Step 3: Cross multiply
    338,889.53x = 507,979.60 × 114,172.31
  4. Step 4: Simplify right side
    338,889.53x = 57,997,201,254.12
  5. Step 5: Solve for x
    x = 57,997,201,254.12/338,889.53
  6. Step 6: Final answer
    x = 171,138.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.