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Finding the Fourth Proportional to 5,706.80, 8,549.04 and 5,087.60

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Solution

The fourth proportional to 5,706.80, 8,549.04 and 5,087.60 is: 7,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.80 : 8,549.04 = 5,087.60 : x
  2. Step 2: Convert to fraction form
    5,706.80/8,549.04 = 5,087.60/x
  3. Step 3: Cross multiply
    5,706.80x = 8,549.04 × 5,087.60
  4. Step 4: Simplify right side
    5,706.80x = 43,494,095.90
  5. Step 5: Solve for x
    x = 43,494,095.90/5,706.80
  6. Step 6: Final answer
    x = 7,621.45

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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.