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Finding the Fourth Proportional to 18,513.70, 25,548.80 and 17,007.50

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Solution

The fourth proportional to 18,513.70, 25,548.80 and 17,007.50 is: 23,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.70 : 25,548.80 = 17,007.50 : x
  2. Step 2: Convert to fraction form
    18,513.70/25,548.80 = 17,007.50/x
  3. Step 3: Cross multiply
    18,513.70x = 25,548.80 × 17,007.50
  4. Step 4: Simplify right side
    18,513.70x = 434,521,216
  5. Step 5: Solve for x
    x = 434,521,216/18,513.70
  6. Step 6: Final answer
    x = 23,470.25

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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.