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Finding the Fourth Proportional to 16,938.40, 25,407.56 and 4,626.40

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Solution

The fourth proportional to 16,938.40, 25,407.56 and 4,626.40 is: 6,939.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.40 : 25,407.56 = 4,626.40 : x
  2. Step 2: Convert to fraction form
    16,938.40/25,407.56 = 4,626.40/x
  3. Step 3: Cross multiply
    16,938.40x = 25,407.56 × 4,626.40
  4. Step 4: Simplify right side
    16,938.40x = 117,545,535.58
  5. Step 5: Solve for x
    x = 117,545,535.58/16,938.40
  6. Step 6: Final answer
    x = 6,939.59

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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.