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Finding the Fourth Proportional to 52,938.61, 79,420.11 and 17,402.94

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Solution

The fourth proportional to 52,938.61, 79,420.11 and 17,402.94 is: 26,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,938.61 : 79,420.11 = 17,402.94 : x
  2. Step 2: Convert to fraction form
    52,938.61/79,420.11 = 17,402.94/x
  3. Step 3: Cross multiply
    52,938.61x = 79,420.11 × 17,402.94
  4. Step 4: Simplify right side
    52,938.61x = 1,382,143,256.65
  5. Step 5: Solve for x
    x = 1,382,143,256.65/52,938.61
  6. Step 6: Final answer
    x = 26,108.41

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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.