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Finding the Fourth Proportional to 336,705.19, 505,057.11 and 196,365.40

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Solution

The fourth proportional to 336,705.19, 505,057.11 and 196,365.40 is: 294,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,705.19 : 505,057.11 = 196,365.40 : x
  2. Step 2: Convert to fraction form
    336,705.19/505,057.11 = 196,365.40/x
  3. Step 3: Cross multiply
    336,705.19x = 505,057.11 × 196,365.40
  4. Step 4: Simplify right side
    336,705.19x = 99,175,739,428.98
  5. Step 5: Solve for x
    x = 99,175,739,428.98/336,705.19
  6. Step 6: Final answer
    x = 294,547.70

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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.