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Finding the Fourth Proportional to 18,659.65, 25,749.15 and 10,276.15

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Solution

The fourth proportional to 18,659.65, 25,749.15 and 10,276.15 is: 14,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.65 : 25,749.15 = 10,276.15 : x
  2. Step 2: Convert to fraction form
    18,659.65/25,749.15 = 10,276.15/x
  3. Step 3: Cross multiply
    18,659.65x = 25,749.15 × 10,276.15
  4. Step 4: Simplify right side
    18,659.65x = 264,602,012.02
  5. Step 5: Solve for x
    x = 264,602,012.02/18,659.65
  6. Step 6: Final answer
    x = 14,180.44

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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.