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Finding the Fourth Proportional to 416,486.45, 624,729.66 and 100,943.36

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Solution

The fourth proportional to 416,486.45, 624,729.66 and 100,943.36 is: 151,415.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,486.45 : 624,729.66 = 100,943.36 : x
  2. Step 2: Convert to fraction form
    416,486.45/624,729.66 = 100,943.36/x
  3. Step 3: Cross multiply
    416,486.45x = 624,729.66 × 100,943.36
  4. Step 4: Simplify right side
    416,486.45x = 63,062,307,848.41
  5. Step 5: Solve for x
    x = 63,062,307,848.41/416,486.45
  6. Step 6: Final answer
    x = 151,415.03

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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.