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Finding the Fourth Proportional to 5,798.68, 8,698.02 and 2,100.90

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Solution

The fourth proportional to 5,798.68, 8,698.02 and 2,100.90 is: 3,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,798.68 : 8,698.02 = 2,100.90 : x
  2. Step 2: Convert to fraction form
    5,798.68/8,698.02 = 2,100.90/x
  3. Step 3: Cross multiply
    5,798.68x = 8,698.02 × 2,100.90
  4. Step 4: Simplify right side
    5,798.68x = 18,273,670.22
  5. Step 5: Solve for x
    x = 18,273,670.22/5,798.68
  6. Step 6: Final answer
    x = 3,151.35

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Double scale
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Similar ratio
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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.