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Finding the Fourth Proportional to 346,690.80, 520,036.20 and 196,873.20

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Solution

The fourth proportional to 346,690.80, 520,036.20 and 196,873.20 is: 295,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,690.80 : 520,036.20 = 196,873.20 : x
  2. Step 2: Convert to fraction form
    346,690.80/520,036.20 = 196,873.20/x
  3. Step 3: Cross multiply
    346,690.80x = 520,036.20 × 196,873.20
  4. Step 4: Simplify right side
    346,690.80x = 102,381,190,809.84
  5. Step 5: Solve for x
    x = 102,381,190,809.84/346,690.80
  6. Step 6: Final answer
    x = 295,309.80

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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.