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Finding the Fourth Proportional to 203,039.20, 304,558.80 and 124,307.20

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Solution

The fourth proportional to 203,039.20, 304,558.80 and 124,307.20 is: 186,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,039.20 : 304,558.80 = 124,307.20 : x
  2. Step 2: Convert to fraction form
    203,039.20/304,558.80 = 124,307.20/x
  3. Step 3: Cross multiply
    203,039.20x = 304,558.80 × 124,307.20
  4. Step 4: Simplify right side
    203,039.20x = 37,858,851,663.36
  5. Step 5: Solve for x
    x = 37,858,851,663.36/203,039.20
  6. Step 6: Final answer
    x = 186,460.80

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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.