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Finding the Fourth Proportional to 14,425.50, 19,907.19 and 7,801.50

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Solution

The fourth proportional to 14,425.50, 19,907.19 and 7,801.50 is: 10,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.50 : 19,907.19 = 7,801.50 : x
  2. Step 2: Convert to fraction form
    14,425.50/19,907.19 = 7,801.50/x
  3. Step 3: Cross multiply
    14,425.50x = 19,907.19 × 7,801.50
  4. Step 4: Simplify right side
    14,425.50x = 155,305,942.79
  5. Step 5: Solve for x
    x = 155,305,942.79/14,425.50
  6. Step 6: Final answer
    x = 10,766.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.