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Finding the Fourth Proportional to 1,289.55, 1,934.19 and 467.67

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Solution

The fourth proportional to 1,289.55, 1,934.19 and 467.67 is: 701.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.55 : 1,934.19 = 467.67 : x
  2. Step 2: Convert to fraction form
    1,289.55/1,934.19 = 467.67/x
  3. Step 3: Cross multiply
    1,289.55x = 1,934.19 × 467.67
  4. Step 4: Simplify right side
    1,289.55x = 904,562.64
  5. Step 5: Solve for x
    x = 904,562.64/1,289.55
  6. Step 6: Final answer
    x = 701.46

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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.