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Finding the Third Proportional to 1,413 and 1,535

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Solution

The third proportional to 1,413 and 1,535 is: 1,667.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413 : 1,535 = 1,535 : x
  2. Step 2: Convert to fraction form
    1,413/1,535 = 1,535/x
  3. Step 3: Cross multiply
    1,413x = 1,535 × 1,535
  4. Step 4: Simplify right side
    1,413x = 2,356,225
  5. Step 5: Solve for x
    x = 2,356,225/1,413
  6. Step 6: Final answer
    x = 1,667.53

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.