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Finding the Fourth Proportional to 1,518.83, 2,096.83 and 988.18

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Solution

The fourth proportional to 1,518.83, 2,096.83 and 988.18 is: 1,364.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.83 : 2,096.83 = 988.18 : x
  2. Step 2: Convert to fraction form
    1,518.83/2,096.83 = 988.18/x
  3. Step 3: Cross multiply
    1,518.83x = 2,096.83 × 988.18
  4. Step 4: Simplify right side
    1,518.83x = 2,072,041.46
  5. Step 5: Solve for x
    x = 2,072,041.46/1,518.83
  6. Step 6: Final answer
    x = 1,364.24

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