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Finding the Fourth Proportional to 3,318,875.64, 4,978,698.92 and 1,159,232.31

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Solution

The fourth proportional to 3,318,875.64, 4,978,698.92 and 1,159,232.31 is: 1,738,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318,875.64 : 4,978,698.92 = 1,159,232.31 : x
  2. Step 2: Convert to fraction form
    3,318,875.64/4,978,698.92 = 1,159,232.31/x
  3. Step 3: Cross multiply
    3,318,875.64x = 4,978,698.92 × 1,159,232.31
  4. Step 4: Simplify right side
    3,318,875.64x = 5,771,468,619,136.45
  5. Step 5: Solve for x
    x = 5,771,468,619,136.45/3,318,875.64
  6. Step 6: Final answer
    x = 1,738,983.09

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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.