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Finding the Fourth Proportional to 318,542.31, 477,317.70 and 118,809.27

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Solution

The fourth proportional to 318,542.31, 477,317.70 and 118,809.27 is: 178,029.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,542.31 : 477,317.70 = 118,809.27 : x
  2. Step 2: Convert to fraction form
    318,542.31/477,317.70 = 118,809.27/x
  3. Step 3: Cross multiply
    318,542.31x = 477,317.70 × 118,809.27
  4. Step 4: Simplify right side
    318,542.31x = 56,709,767,495.08
  5. Step 5: Solve for x
    x = 56,709,767,495.08/318,542.31
  6. Step 6: Final answer
    x = 178,029.00

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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.