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Finding the Fourth Proportional to 153,930.99, 230,880.24 and 72,858.60

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Solution

The fourth proportional to 153,930.99, 230,880.24 and 72,858.60 is: 109,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,930.99 : 230,880.24 = 72,858.60 : x
  2. Step 2: Convert to fraction form
    153,930.99/230,880.24 = 72,858.60/x
  3. Step 3: Cross multiply
    153,930.99x = 230,880.24 × 72,858.60
  4. Step 4: Simplify right side
    153,930.99x = 16,821,611,054.06
  5. Step 5: Solve for x
    x = 16,821,611,054.06/153,930.99
  6. Step 6: Final answer
    x = 109,280.21

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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.