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Finding the Fourth Proportional to 1,459.67, 2,188.70 and 997.97

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Solution

The fourth proportional to 1,459.67, 2,188.70 and 997.97 is: 1,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.67 : 2,188.70 = 997.97 : x
  2. Step 2: Convert to fraction form
    1,459.67/2,188.70 = 997.97/x
  3. Step 3: Cross multiply
    1,459.67x = 2,188.70 × 997.97
  4. Step 4: Simplify right side
    1,459.67x = 2,184,256.94
  5. Step 5: Solve for x
    x = 2,184,256.94/1,459.67
  6. Step 6: Final answer
    x = 1,496.40

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1.5x scale

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.