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Finding the Fourth Proportional to 18,710.46, 28,066.77 and 7,023.78

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Solution

The fourth proportional to 18,710.46, 28,066.77 and 7,023.78 is: 10,536.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.46 : 28,066.77 = 7,023.78 : x
  2. Step 2: Convert to fraction form
    18,710.46/28,066.77 = 7,023.78/x
  3. Step 3: Cross multiply
    18,710.46x = 28,066.77 × 7,023.78
  4. Step 4: Simplify right side
    18,710.46x = 197,134,817.79
  5. Step 5: Solve for x
    x = 197,134,817.79/18,710.46
  6. Step 6: Final answer
    x = 10,536.08

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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.