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Finding the Fourth Proportional to 560,091.20, 840,136.80 and 186,114.20

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Solution

The fourth proportional to 560,091.20, 840,136.80 and 186,114.20 is: 279,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,091.20 : 840,136.80 = 186,114.20 : x
  2. Step 2: Convert to fraction form
    560,091.20/840,136.80 = 186,114.20/x
  3. Step 3: Cross multiply
    560,091.20x = 840,136.80 × 186,114.20
  4. Step 4: Simplify right side
    560,091.20x = 156,361,388,422.56
  5. Step 5: Solve for x
    x = 156,361,388,422.56/560,091.20
  6. Step 6: Final answer
    x = 279,171.30

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1.5x scale

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.