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Finding the Fourth Proportional to 199,586.40, 299,136.60 and 87,028.80

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Solution

The fourth proportional to 199,586.40, 299,136.60 and 87,028.80 is: 130,437.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,586.40 : 299,136.60 = 87,028.80 : x
  2. Step 2: Convert to fraction form
    199,586.40/299,136.60 = 87,028.80/x
  3. Step 3: Cross multiply
    199,586.40x = 299,136.60 × 87,028.80
  4. Step 4: Simplify right side
    199,586.40x = 26,033,499,334.08
  5. Step 5: Solve for x
    x = 26,033,499,334.08/199,586.40
  6. Step 6: Final answer
    x = 130,437.24

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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.