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Finding the Fourth Proportional to 5,858.50, 8,789.12 and 1,698.60

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Solution

The fourth proportional to 5,858.50, 8,789.12 and 1,698.60 is: 2,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.50 : 8,789.12 = 1,698.60 : x
  2. Step 2: Convert to fraction form
    5,858.50/8,789.12 = 1,698.60/x
  3. Step 3: Cross multiply
    5,858.50x = 8,789.12 × 1,698.60
  4. Step 4: Simplify right side
    5,858.50x = 14,929,199.23
  5. Step 5: Solve for x
    x = 14,929,199.23/5,858.50
  6. Step 6: Final answer
    x = 2,548.30

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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.