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Finding the Fourth Proportional to 6,902.80, 10,354.20 and 4,973.20

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Solution

The fourth proportional to 6,902.80, 10,354.20 and 4,973.20 is: 7,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,902.80 : 10,354.20 = 4,973.20 : x
  2. Step 2: Convert to fraction form
    6,902.80/10,354.20 = 4,973.20/x
  3. Step 3: Cross multiply
    6,902.80x = 10,354.20 × 4,973.20
  4. Step 4: Simplify right side
    6,902.80x = 51,493,507.44
  5. Step 5: Solve for x
    x = 51,493,507.44/6,902.80
  6. Step 6: Final answer
    x = 7,459.80

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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.