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Finding the Fourth Proportional to 370,913.60, 556,240.80 and 193,361.60

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Solution

The fourth proportional to 370,913.60, 556,240.80 and 193,361.60 is: 289,974.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,913.60 : 556,240.80 = 193,361.60 : x
  2. Step 2: Convert to fraction form
    370,913.60/556,240.80 = 193,361.60/x
  3. Step 3: Cross multiply
    370,913.60x = 556,240.80 × 193,361.60
  4. Step 4: Simplify right side
    370,913.60x = 107,555,611,073.28
  5. Step 5: Solve for x
    x = 107,555,611,073.28/370,913.60
  6. Step 6: Final answer
    x = 289,974.84

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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.