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Finding the Fourth Proportional to 5,256.65, 7,254.69 and 3,928.04

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Solution

The fourth proportional to 5,256.65, 7,254.69 and 3,928.04 is: 5,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,256.65 : 7,254.69 = 3,928.04 : x
  2. Step 2: Convert to fraction form
    5,256.65/7,254.69 = 3,928.04/x
  3. Step 3: Cross multiply
    5,256.65x = 7,254.69 × 3,928.04
  4. Step 4: Simplify right side
    5,256.65x = 28,496,712.51
  5. Step 5: Solve for x
    x = 28,496,712.51/5,256.65
  6. Step 6: Final answer
    x = 5,421.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.