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Finding the Fourth Proportional to 405,253.80, 607,005.90 and 263,536.20

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Solution

The fourth proportional to 405,253.80, 607,005.90 and 263,536.20 is: 394,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,253.80 : 607,005.90 = 263,536.20 : x
  2. Step 2: Convert to fraction form
    405,253.80/607,005.90 = 263,536.20/x
  3. Step 3: Cross multiply
    405,253.80x = 607,005.90 × 263,536.20
  4. Step 4: Simplify right side
    405,253.80x = 159,968,028,263.58
  5. Step 5: Solve for x
    x = 159,968,028,263.58/405,253.80
  6. Step 6: Final answer
    x = 394,735.42

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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.