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Finding the Fourth Proportional to 45,808.60, 68,712.90 and 38,896.60

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Solution

The fourth proportional to 45,808.60, 68,712.90 and 38,896.60 is: 58,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,808.60 : 68,712.90 = 38,896.60 : x
  2. Step 2: Convert to fraction form
    45,808.60/68,712.90 = 38,896.60/x
  3. Step 3: Cross multiply
    45,808.60x = 68,712.90 × 38,896.60
  4. Step 4: Simplify right side
    45,808.60x = 2,672,698,186.14
  5. Step 5: Solve for x
    x = 2,672,698,186.14/45,808.60
  6. Step 6: Final answer
    x = 58,344.90

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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.