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Finding the Fourth Proportional to 1,322.96, 1,985.00 and 705.94

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Solution

The fourth proportional to 1,322.96, 1,985.00 and 705.94 is: 1,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.96 : 1,985.00 = 705.94 : x
  2. Step 2: Convert to fraction form
    1,322.96/1,985.00 = 705.94/x
  3. Step 3: Cross multiply
    1,322.96x = 1,985.00 × 705.94
  4. Step 4: Simplify right side
    1,322.96x = 1,401,282.41
  5. Step 5: Solve for x
    x = 1,401,282.41/1,322.96
  6. Step 6: Final answer
    x = 1,059.21

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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.