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Finding the Fourth Proportional to 16,908.20, 25,356.90 and 7,045.10

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Solution

The fourth proportional to 16,908.20, 25,356.90 and 7,045.10 is: 10,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,908.20 : 25,356.90 = 7,045.10 : x
  2. Step 2: Convert to fraction form
    16,908.20/25,356.90 = 7,045.10/x
  3. Step 3: Cross multiply
    16,908.20x = 25,356.90 × 7,045.10
  4. Step 4: Simplify right side
    16,908.20x = 178,641,896.19
  5. Step 5: Solve for x
    x = 178,641,896.19/16,908.20
  6. Step 6: Final answer
    x = 10,565.40

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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.