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Finding the Fourth Proportional to 25,358.40, 37,964.70 and 15,516.90

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Solution

The fourth proportional to 25,358.40, 37,964.70 and 15,516.90 is: 23,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,358.40 : 37,964.70 = 15,516.90 : x
  2. Step 2: Convert to fraction form
    25,358.40/37,964.70 = 15,516.90/x
  3. Step 3: Cross multiply
    25,358.40x = 37,964.70 × 15,516.90
  4. Step 4: Simplify right side
    25,358.40x = 589,094,453.43
  5. Step 5: Solve for x
    x = 589,094,453.43/25,358.40
  6. Step 6: Final answer
    x = 23,230.74

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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.