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Finding the Fourth Proportional to 13,295.53, 18,348.89 and 7,328.21

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Solution

The fourth proportional to 13,295.53, 18,348.89 and 7,328.21 is: 10,113.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.53 : 18,348.89 = 7,328.21 : x
  2. Step 2: Convert to fraction form
    13,295.53/18,348.89 = 7,328.21/x
  3. Step 3: Cross multiply
    13,295.53x = 18,348.89 × 7,328.21
  4. Step 4: Simplify right side
    13,295.53x = 134,464,519.19
  5. Step 5: Solve for x
    x = 134,464,519.19/13,295.53
  6. Step 6: Final answer
    x = 10,113.51

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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.