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Finding the Fourth Proportional to 18,423.60, 25,827.60 and 18,423.60

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Solution

The fourth proportional to 18,423.60, 25,827.60 and 18,423.60 is: 25,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.60 : 25,827.60 = 18,423.60 : x
  2. Step 2: Convert to fraction form
    18,423.60/25,827.60 = 18,423.60/x
  3. Step 3: Cross multiply
    18,423.60x = 25,827.60 × 18,423.60
  4. Step 4: Simplify right side
    18,423.60x = 475,837,371.36
  5. Step 5: Solve for x
    x = 475,837,371.36/18,423.60
  6. Step 6: Final answer
    x = 25,827.60

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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.