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Finding the Fourth Proportional to 13,472.16, 18,589.56 and 7,503.90

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Solution

The fourth proportional to 13,472.16, 18,589.56 and 7,503.90 is: 10,354.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.16 : 18,589.56 = 7,503.90 : x
  2. Step 2: Convert to fraction form
    13,472.16/18,589.56 = 7,503.90/x
  3. Step 3: Cross multiply
    13,472.16x = 18,589.56 × 7,503.90
  4. Step 4: Simplify right side
    13,472.16x = 139,494,199.28
  5. Step 5: Solve for x
    x = 139,494,199.28/13,472.16
  6. Step 6: Final answer
    x = 10,354.26

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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.