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Finding the Fourth Proportional to 13,298.81, 18,352.49 and 7,330.70

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Solution

The fourth proportional to 13,298.81, 18,352.49 and 7,330.70 is: 10,116.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.81 : 18,352.49 = 7,330.70 : x
  2. Step 2: Convert to fraction form
    13,298.81/18,352.49 = 7,330.70/x
  3. Step 3: Cross multiply
    13,298.81x = 18,352.49 × 7,330.70
  4. Step 4: Simplify right side
    13,298.81x = 134,536,470.03
  5. Step 5: Solve for x
    x = 134,536,470.03/13,298.81
  6. Step 6: Final answer
    x = 10,116.43

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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.