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Finding the Fourth Proportional to 317,672.04, 476,402.32 and 128,083.44

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Solution

The fourth proportional to 317,672.04, 476,402.32 and 128,083.44 is: 192,082.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,672.04 : 476,402.32 = 128,083.44 : x
  2. Step 2: Convert to fraction form
    317,672.04/476,402.32 = 128,083.44/x
  3. Step 3: Cross multiply
    317,672.04x = 476,402.32 × 128,083.44
  4. Step 4: Simplify right side
    317,672.04x = 61,019,247,969.58
  5. Step 5: Solve for x
    x = 61,019,247,969.58/317,672.04
  6. Step 6: Final answer
    x = 192,082.53

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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.