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Finding the Fourth Proportional to 349,847.60, 524,809.56 and 128,231.60

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Solution

The fourth proportional to 349,847.60, 524,809.56 and 128,231.60 is: 192,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,847.60 : 524,809.56 = 128,231.60 : x
  2. Step 2: Convert to fraction form
    349,847.60/524,809.56 = 128,231.60/x
  3. Step 3: Cross multiply
    349,847.60x = 524,809.56 × 128,231.60
  4. Step 4: Simplify right side
    349,847.60x = 67,297,169,574.10
  5. Step 5: Solve for x
    x = 67,297,169,574.10/349,847.60
  6. Step 6: Final answer
    x = 192,361.39

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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.