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Finding the Fourth Proportional to 18,625.60, 25,703.04 and 10,242.08

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Solution

The fourth proportional to 18,625.60, 25,703.04 and 10,242.08 is: 14,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.60 : 25,703.04 = 10,242.08 : x
  2. Step 2: Convert to fraction form
    18,625.60/25,703.04 = 10,242.08/x
  3. Step 3: Cross multiply
    18,625.60x = 25,703.04 × 10,242.08
  4. Step 4: Simplify right side
    18,625.60x = 263,252,591.92
  5. Step 5: Solve for x
    x = 263,252,591.92/18,625.60
  6. Step 6: Final answer
    x = 14,133.91

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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.