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Finding the Fourth Proportional to 935.53, 1,291.11 and 515.92

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Solution

The fourth proportional to 935.53, 1,291.11 and 515.92 is: 712.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.53 : 1,291.11 = 515.92 : x
  2. Step 2: Convert to fraction form
    935.53/1,291.11 = 515.92/x
  3. Step 3: Cross multiply
    935.53x = 1,291.11 × 515.92
  4. Step 4: Simplify right side
    935.53x = 666,106.89
  5. Step 5: Solve for x
    x = 666,106.89/935.53
  6. Step 6: Final answer
    x = 712.01

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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.