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Finding the Fourth Proportional to 196,606.60, 295,128.60 and 121,811.20

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Solution

The fourth proportional to 196,606.60, 295,128.60 and 121,811.20 is: 182,852.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,606.60 : 295,128.60 = 121,811.20 : x
  2. Step 2: Convert to fraction form
    196,606.60/295,128.60 = 121,811.20/x
  3. Step 3: Cross multiply
    196,606.60x = 295,128.60 × 121,811.20
  4. Step 4: Simplify right side
    196,606.60x = 35,949,968,920.32
  5. Step 5: Solve for x
    x = 35,949,968,920.32/196,606.60
  6. Step 6: Final answer
    x = 182,852.30

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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.