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Finding the Fourth Proportional to 3,460.48, 5,190.55 and 995.28

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Solution

The fourth proportional to 3,460.48, 5,190.55 and 995.28 is: 1,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.48 : 5,190.55 = 995.28 : x
  2. Step 2: Convert to fraction form
    3,460.48/5,190.55 = 995.28/x
  3. Step 3: Cross multiply
    3,460.48x = 5,190.55 × 995.28
  4. Step 4: Simplify right side
    3,460.48x = 5,166,050.60
  5. Step 5: Solve for x
    x = 5,166,050.60/3,460.48
  6. Step 6: Final answer
    x = 1,492.87

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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.