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Finding the Fourth Proportional to 103,466.19, 155,211.43 and 36,915.78

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Solution

The fourth proportional to 103,466.19, 155,211.43 and 36,915.78 is: 55,378.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,466.19 : 155,211.43 = 36,915.78 : x
  2. Step 2: Convert to fraction form
    103,466.19/155,211.43 = 36,915.78/x
  3. Step 3: Cross multiply
    103,466.19x = 155,211.43 × 36,915.78
  4. Step 4: Simplify right side
    103,466.19x = 5,729,751,003.37
  5. Step 5: Solve for x
    x = 5,729,751,003.37/103,466.19
  6. Step 6: Final answer
    x = 55,378.00

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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.