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Finding the Fourth Proportional to 13,241.40, 18,273.12 and 7,652.40

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Solution

The fourth proportional to 13,241.40, 18,273.12 and 7,652.40 is: 10,560.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,241.40 : 18,273.12 = 7,652.40 : x
  2. Step 2: Convert to fraction form
    13,241.40/18,273.12 = 7,652.40/x
  3. Step 3: Cross multiply
    13,241.40x = 18,273.12 × 7,652.40
  4. Step 4: Simplify right side
    13,241.40x = 139,833,223.49
  5. Step 5: Solve for x
    x = 139,833,223.49/13,241.40
  6. Step 6: Final answer
    x = 10,560.31

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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.