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Finding the Fourth Proportional to 1,492.65, 2,060.81 and 1,021.33

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Solution

The fourth proportional to 1,492.65, 2,060.81 and 1,021.33 is: 1,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.65 : 2,060.81 = 1,021.33 : x
  2. Step 2: Convert to fraction form
    1,492.65/2,060.81 = 1,021.33/x
  3. Step 3: Cross multiply
    1,492.65x = 2,060.81 × 1,021.33
  4. Step 4: Simplify right side
    1,492.65x = 2,104,764.55
  5. Step 5: Solve for x
    x = 2,104,764.55/1,492.65
  6. Step 6: Final answer
    x = 1,410.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.