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Finding the Fourth Proportional to 16,805.81, 25,210.31 and 4,959.63

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Solution

The fourth proportional to 16,805.81, 25,210.31 and 4,959.63 is: 7,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.81 : 25,210.31 = 4,959.63 : x
  2. Step 2: Convert to fraction form
    16,805.81/25,210.31 = 4,959.63/x
  3. Step 3: Cross multiply
    16,805.81x = 25,210.31 × 4,959.63
  4. Step 4: Simplify right side
    16,805.81x = 125,033,784.99
  5. Step 5: Solve for x
    x = 125,033,784.99/16,805.81
  6. Step 6: Final answer
    x = 7,439.91

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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.