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Finding the Fourth Proportional to 7,720.55, 10,654.23 and 4,363.23

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Solution

The fourth proportional to 7,720.55, 10,654.23 and 4,363.23 is: 6,021.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.55 : 10,654.23 = 4,363.23 : x
  2. Step 2: Convert to fraction form
    7,720.55/10,654.23 = 4,363.23/x
  3. Step 3: Cross multiply
    7,720.55x = 10,654.23 × 4,363.23
  4. Step 4: Simplify right side
    7,720.55x = 46,486,855.96
  5. Step 5: Solve for x
    x = 46,486,855.96/7,720.55
  6. Step 6: Final answer
    x = 6,021.18

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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.