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Finding the Fourth Proportional to 1,435.96, 2,155.02 and 462.52

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Solution

The fourth proportional to 1,435.96, 2,155.02 and 462.52 is: 694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.96 : 2,155.02 = 462.52 : x
  2. Step 2: Convert to fraction form
    1,435.96/2,155.02 = 462.52/x
  3. Step 3: Cross multiply
    1,435.96x = 2,155.02 × 462.52
  4. Step 4: Simplify right side
    1,435.96x = 996,739.85
  5. Step 5: Solve for x
    x = 996,739.85/1,435.96
  6. Step 6: Final answer
    x = 694.13

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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.