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Finding the Fourth Proportional to 5,933.60, 8,905.80 and 5,112.80

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Solution

The fourth proportional to 5,933.60, 8,905.80 and 5,112.80 is: 7,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,933.60 : 8,905.80 = 5,112.80 : x
  2. Step 2: Convert to fraction form
    5,933.60/8,905.80 = 5,112.80/x
  3. Step 3: Cross multiply
    5,933.60x = 8,905.80 × 5,112.80
  4. Step 4: Simplify right side
    5,933.60x = 45,533,574.24
  5. Step 5: Solve for x
    x = 45,533,574.24/5,933.60
  6. Step 6: Final answer
    x = 7,673.85

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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.