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Finding the Fourth Proportional to 5,729.94, 8,555.72 and 5,133.11

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Solution

The fourth proportional to 5,729.94, 8,555.72 and 5,133.11 is: 7,664.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.94 : 8,555.72 = 5,133.11 : x
  2. Step 2: Convert to fraction form
    5,729.94/8,555.72 = 5,133.11/x
  3. Step 3: Cross multiply
    5,729.94x = 8,555.72 × 5,133.11
  4. Step 4: Simplify right side
    5,729.94x = 43,917,447.61
  5. Step 5: Solve for x
    x = 43,917,447.61/5,729.94
  6. Step 6: Final answer
    x = 7,664.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.