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Finding the Fourth Proportional to 14,751.85, 20,347.10 and 14,263.69

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Solution

The fourth proportional to 14,751.85, 20,347.10 and 14,263.69 is: 19,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,751.85 : 20,347.10 = 14,263.69 : x
  2. Step 2: Convert to fraction form
    14,751.85/20,347.10 = 14,263.69/x
  3. Step 3: Cross multiply
    14,751.85x = 20,347.10 × 14,263.69
  4. Step 4: Simplify right side
    14,751.85x = 290,224,553.75
  5. Step 5: Solve for x
    x = 290,224,553.75/14,751.85
  6. Step 6: Final answer
    x = 19,673.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.