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Finding the Fourth Proportional to 405,953.70, 608,930.55 and 196,001.70

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Solution

The fourth proportional to 405,953.70, 608,930.55 and 196,001.70 is: 294,002.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,953.70 : 608,930.55 = 196,001.70 : x
  2. Step 2: Convert to fraction form
    405,953.70/608,930.55 = 196,001.70/x
  3. Step 3: Cross multiply
    405,953.70x = 608,930.55 × 196,001.70
  4. Step 4: Simplify right side
    405,953.70x = 119,351,422,981.94
  5. Step 5: Solve for x
    x = 119,351,422,981.94/405,953.70
  6. Step 6: Final answer
    x = 294,002.55

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1.5x scale

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.