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Finding the Fourth Proportional to 18,336.60, 25,705.80 and 18,336.60

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Solution

The fourth proportional to 18,336.60, 25,705.80 and 18,336.60 is: 25,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336.60 : 25,705.80 = 18,336.60 : x
  2. Step 2: Convert to fraction form
    18,336.60/25,705.80 = 18,336.60/x
  3. Step 3: Cross multiply
    18,336.60x = 25,705.80 × 18,336.60
  4. Step 4: Simplify right side
    18,336.60x = 471,356,972.28
  5. Step 5: Solve for x
    x = 471,356,972.28/18,336.60
  6. Step 6: Final answer
    x = 25,705.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.