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Finding the Fourth Proportional to 1,080.79, 1,492.11 and 1,034.35

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Solution

The fourth proportional to 1,080.79, 1,492.11 and 1,034.35 is: 1,428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.79 : 1,492.11 = 1,034.35 : x
  2. Step 2: Convert to fraction form
    1,080.79/1,492.11 = 1,034.35/x
  3. Step 3: Cross multiply
    1,080.79x = 1,492.11 × 1,034.35
  4. Step 4: Simplify right side
    1,080.79x = 1,543,363.98
  5. Step 5: Solve for x
    x = 1,543,363.98/1,080.79
  6. Step 6: Final answer
    x = 1,428.00

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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.