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Finding the Fourth Proportional to 325,211.99, 448,494.38 and 279,256.03

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Solution

The fourth proportional to 325,211.99, 448,494.38 and 279,256.03 is: 385,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,211.99 : 448,494.38 = 279,256.03 : x
  2. Step 2: Convert to fraction form
    325,211.99/448,494.38 = 279,256.03/x
  3. Step 3: Cross multiply
    325,211.99x = 448,494.38 × 279,256.03
  4. Step 4: Simplify right side
    325,211.99x = 125,244,756,397.36
  5. Step 5: Solve for x
    x = 125,244,756,397.36/325,211.99
  6. Step 6: Final answer
    x = 385,117.28

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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.