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Finding the Fourth Proportional to 13,598.76, 20,406.23 and 7,358.65

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Solution

The fourth proportional to 13,598.76, 20,406.23 and 7,358.65 is: 11,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.76 : 20,406.23 = 7,358.65 : x
  2. Step 2: Convert to fraction form
    13,598.76/20,406.23 = 7,358.65/x
  3. Step 3: Cross multiply
    13,598.76x = 20,406.23 × 7,358.65
  4. Step 4: Simplify right side
    13,598.76x = 150,162,304.39
  5. Step 5: Solve for x
    x = 150,162,304.39/13,598.76
  6. Step 6: Final answer
    x = 11,042.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.