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Finding the Fourth Proportional to 1,889.99, 2,835.01 and 657.44

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Solution

The fourth proportional to 1,889.99, 2,835.01 and 657.44 is: 986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.99 : 2,835.01 = 657.44 : x
  2. Step 2: Convert to fraction form
    1,889.99/2,835.01 = 657.44/x
  3. Step 3: Cross multiply
    1,889.99x = 2,835.01 × 657.44
  4. Step 4: Simplify right side
    1,889.99x = 1,863,834.80
  5. Step 5: Solve for x
    x = 1,863,834.80/1,889.99
  6. Step 6: Final answer
    x = 986.16

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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.