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Finding the Fourth Proportional to 19,897.80, 29,847.02 and 6,750.51

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Solution

The fourth proportional to 19,897.80, 29,847.02 and 6,750.51 is: 10,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.80 : 29,847.02 = 6,750.51 : x
  2. Step 2: Convert to fraction form
    19,897.80/29,847.02 = 6,750.51/x
  3. Step 3: Cross multiply
    19,897.80x = 29,847.02 × 6,750.51
  4. Step 4: Simplify right side
    19,897.80x = 201,482,606.98
  5. Step 5: Solve for x
    x = 201,482,606.98/19,897.80
  6. Step 6: Final answer
    x = 10,125.87

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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.