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Finding the Fourth Proportional to 18,763.96, 28,060.62 and 14,023.48

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Solution

The fourth proportional to 18,763.96, 28,060.62 and 14,023.48 is: 20,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.96 : 28,060.62 = 14,023.48 : x
  2. Step 2: Convert to fraction form
    18,763.96/28,060.62 = 14,023.48/x
  3. Step 3: Cross multiply
    18,763.96x = 28,060.62 × 14,023.48
  4. Step 4: Simplify right side
    18,763.96x = 393,507,543.36
  5. Step 5: Solve for x
    x = 393,507,543.36/18,763.96
  6. Step 6: Final answer
    x = 20,971.46

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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.