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Finding the Fourth Proportional to 18,842.52, 25,985.74 and 14,074.03

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Solution

The fourth proportional to 18,842.52, 25,985.74 and 14,074.03 is: 19,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.52 : 25,985.74 = 14,074.03 : x
  2. Step 2: Convert to fraction form
    18,842.52/25,985.74 = 14,074.03/x
  3. Step 3: Cross multiply
    18,842.52x = 25,985.74 × 14,074.03
  4. Step 4: Simplify right side
    18,842.52x = 365,723,995.35
  5. Step 5: Solve for x
    x = 365,723,995.35/18,842.52
  6. Step 6: Final answer
    x = 19,409.50

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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.