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Finding the Fourth Proportional to 18,160.98, 25,063.47 and 11,088.78

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Solution

The fourth proportional to 18,160.98, 25,063.47 and 11,088.78 is: 15,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,160.98 : 25,063.47 = 11,088.78 : x
  2. Step 2: Convert to fraction form
    18,160.98/25,063.47 = 11,088.78/x
  3. Step 3: Cross multiply
    18,160.98x = 25,063.47 × 11,088.78
  4. Step 4: Simplify right side
    18,160.98x = 277,923,304.87
  5. Step 5: Solve for x
    x = 277,923,304.87/18,160.98
  6. Step 6: Final answer
    x = 15,303.32

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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.