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Finding the Fourth Proportional to 18,273.70, 25,641.50 and 18,273.70

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Solution

The fourth proportional to 18,273.70, 25,641.50 and 18,273.70 is: 25,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.70 : 25,641.50 = 18,273.70 : x
  2. Step 2: Convert to fraction form
    18,273.70/25,641.50 = 18,273.70/x
  3. Step 3: Cross multiply
    18,273.70x = 25,641.50 × 18,273.70
  4. Step 4: Simplify right side
    18,273.70x = 468,565,078.55
  5. Step 5: Solve for x
    x = 468,565,078.55/18,273.70
  6. Step 6: Final answer
    x = 25,641.50

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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.