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Finding the Fourth Proportional to 10,469.04, 15,703.76 and 4,919.32

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Solution

The fourth proportional to 10,469.04, 15,703.76 and 4,919.32 is: 7,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,469.04 : 15,703.76 = 4,919.32 : x
  2. Step 2: Convert to fraction form
    10,469.04/15,703.76 = 4,919.32/x
  3. Step 3: Cross multiply
    10,469.04x = 15,703.76 × 4,919.32
  4. Step 4: Simplify right side
    10,469.04x = 77,251,820.64
  5. Step 5: Solve for x
    x = 77,251,820.64/10,469.04
  6. Step 6: Final answer
    x = 7,379.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.