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Finding the Fourth Proportional to 1,931.53, 2,662.86 and 1,293.22

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Solution

The fourth proportional to 1,931.53, 2,662.86 and 1,293.22 is: 1,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.53 : 2,662.86 = 1,293.22 : x
  2. Step 2: Convert to fraction form
    1,931.53/2,662.86 = 1,293.22/x
  3. Step 3: Cross multiply
    1,931.53x = 2,662.86 × 1,293.22
  4. Step 4: Simplify right side
    1,931.53x = 3,443,663.81
  5. Step 5: Solve for x
    x = 3,443,663.81/1,931.53
  6. Step 6: Final answer
    x = 1,782.87

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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.