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Finding the Fourth Proportional to 7,636.68, 10,530 and 5,394.60

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Solution

The fourth proportional to 7,636.68, 10,530 and 5,394.60 is: 7,438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,636.68 : 10,530 = 5,394.60 : x
  2. Step 2: Convert to fraction form
    7,636.68/10,530 = 5,394.60/x
  3. Step 3: Cross multiply
    7,636.68x = 10,530 × 5,394.60
  4. Step 4: Simplify right side
    7,636.68x = 56,805,138.00
  5. Step 5: Solve for x
    x = 56,805,138.00/7,636.68
  6. Step 6: Final answer
    x = 7,438.46

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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.