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Finding the Fourth Proportional to 19,353.90, 29,043.78 and 7,041.90

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Solution

The fourth proportional to 19,353.90, 29,043.78 and 7,041.90 is: 10,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,353.90 : 29,043.78 = 7,041.90 : x
  2. Step 2: Convert to fraction form
    19,353.90/29,043.78 = 7,041.90/x
  3. Step 3: Cross multiply
    19,353.90x = 29,043.78 × 7,041.90
  4. Step 4: Simplify right side
    19,353.90x = 204,523,394.38
  5. Step 5: Solve for x
    x = 204,523,394.38/19,353.90
  6. Step 6: Final answer
    x = 10,567.55

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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.