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Finding the Fourth Proportional to 7,358.80, 11,043.60 and 4,892.80

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Solution

The fourth proportional to 7,358.80, 11,043.60 and 4,892.80 is: 7,342.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,358.80 : 11,043.60 = 4,892.80 : x
  2. Step 2: Convert to fraction form
    7,358.80/11,043.60 = 4,892.80/x
  3. Step 3: Cross multiply
    7,358.80x = 11,043.60 × 4,892.80
  4. Step 4: Simplify right side
    7,358.80x = 54,034,126.08
  5. Step 5: Solve for x
    x = 54,034,126.08/7,358.80
  6. Step 6: Final answer
    x = 7,342.79

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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.