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Finding the Fourth Proportional to 8,195.40, 11,308.98 and 4,657.80

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Solution

The fourth proportional to 8,195.40, 11,308.98 and 4,657.80 is: 6,427.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,195.40 : 11,308.98 = 4,657.80 : x
  2. Step 2: Convert to fraction form
    8,195.40/11,308.98 = 4,657.80/x
  3. Step 3: Cross multiply
    8,195.40x = 11,308.98 × 4,657.80
  4. Step 4: Simplify right side
    8,195.40x = 52,674,967.04
  5. Step 5: Solve for x
    x = 52,674,967.04/8,195.40
  6. Step 6: Final answer
    x = 6,427.38

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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.