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Finding the Fourth Proportional to 313,991.20, 433,155.50 and 186,576.60

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Solution

The fourth proportional to 313,991.20, 433,155.50 and 186,576.60 is: 257,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,991.20 : 433,155.50 = 186,576.60 : x
  2. Step 2: Convert to fraction form
    313,991.20/433,155.50 = 186,576.60/x
  3. Step 3: Cross multiply
    313,991.20x = 433,155.50 × 186,576.60
  4. Step 4: Simplify right side
    313,991.20x = 80,816,680,461.30
  5. Step 5: Solve for x
    x = 80,816,680,461.30/313,991.20
  6. Step 6: Final answer
    x = 257,385.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.