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Finding the Fourth Proportional to 18,706.88, 28,052.64 and 7,014.08

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Solution

The fourth proportional to 18,706.88, 28,052.64 and 7,014.08 is: 10,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.88 : 28,052.64 = 7,014.08 : x
  2. Step 2: Convert to fraction form
    18,706.88/28,052.64 = 7,014.08/x
  3. Step 3: Cross multiply
    18,706.88x = 28,052.64 × 7,014.08
  4. Step 4: Simplify right side
    18,706.88x = 196,763,461.17
  5. Step 5: Solve for x
    x = 196,763,461.17/18,706.88
  6. Step 6: Final answer
    x = 10,518.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.