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Finding the Fourth Proportional to 2,653.84, 3,980.32 and 706.08

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Solution

The fourth proportional to 2,653.84, 3,980.32 and 706.08 is: 1,059.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.84 : 3,980.32 = 706.08 : x
  2. Step 2: Convert to fraction form
    2,653.84/3,980.32 = 706.08/x
  3. Step 3: Cross multiply
    2,653.84x = 3,980.32 × 706.08
  4. Step 4: Simplify right side
    2,653.84x = 2,810,424.35
  5. Step 5: Solve for x
    x = 2,810,424.35/2,653.84
  6. Step 6: Final answer
    x = 1,059.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.