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Finding the Fourth Proportional to 196,776.60, 295,383.60 and 121,981.20

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Solution

The fourth proportional to 196,776.60, 295,383.60 and 121,981.20 is: 183,107.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,776.60 : 295,383.60 = 121,981.20 : x
  2. Step 2: Convert to fraction form
    196,776.60/295,383.60 = 121,981.20/x
  3. Step 3: Cross multiply
    196,776.60x = 295,383.60 × 121,981.20
  4. Step 4: Simplify right side
    196,776.60x = 36,031,245,988.32
  5. Step 5: Solve for x
    x = 36,031,245,988.32/196,776.60
  6. Step 6: Final answer
    x = 183,107.37

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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.