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Finding the Fourth Proportional to 405,199.80, 606,924.90 and 263,482.20

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Solution

The fourth proportional to 405,199.80, 606,924.90 and 263,482.20 is: 394,654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,199.80 : 606,924.90 = 263,482.20 : x
  2. Step 2: Convert to fraction form
    405,199.80/606,924.90 = 263,482.20/x
  3. Step 3: Cross multiply
    405,199.80x = 606,924.90 × 263,482.20
  4. Step 4: Simplify right side
    405,199.80x = 159,913,907,886.78
  5. Step 5: Solve for x
    x = 159,913,907,886.78/405,199.80
  6. Step 6: Final answer
    x = 394,654.46

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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.