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Finding the Fourth Proportional to 944.55, 1,416.98 and 396.76

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Solution

The fourth proportional to 944.55, 1,416.98 and 396.76 is: 595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.55 : 1,416.98 = 396.76 : x
  2. Step 2: Convert to fraction form
    944.55/1,416.98 = 396.76/x
  3. Step 3: Cross multiply
    944.55x = 1,416.98 × 396.76
  4. Step 4: Simplify right side
    944.55x = 562,200.98
  5. Step 5: Solve for x
    x = 562,200.98/944.55
  6. Step 6: Final answer
    x = 595.21

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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.