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Finding the Fourth Proportional to 35,415.15, 48,861.87 and 20,099.16

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Solution

The fourth proportional to 35,415.15, 48,861.87 and 20,099.16 is: 27,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,415.15 : 48,861.87 = 20,099.16 : x
  2. Step 2: Convert to fraction form
    35,415.15/48,861.87 = 20,099.16/x
  3. Step 3: Cross multiply
    35,415.15x = 48,861.87 × 20,099.16
  4. Step 4: Simplify right side
    35,415.15x = 982,082,543.03
  5. Step 5: Solve for x
    x = 982,082,543.03/35,415.15
  6. Step 6: Final answer
    x = 27,730.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.