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Finding the Fourth Proportional to 370,928.40, 556,392.60 and 366,991.80

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Solution

The fourth proportional to 370,928.40, 556,392.60 and 366,991.80 is: 550,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,928.40 : 556,392.60 = 366,991.80 : x
  2. Step 2: Convert to fraction form
    370,928.40/556,392.60 = 366,991.80/x
  3. Step 3: Cross multiply
    370,928.40x = 556,392.60 × 366,991.80
  4. Step 4: Simplify right side
    370,928.40x = 204,191,521,780.68
  5. Step 5: Solve for x
    x = 204,191,521,780.68/370,928.40
  6. Step 6: Final answer
    x = 550,487.70

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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.