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Finding the Fourth Proportional to 29,602.80, 44,420.40 and 12,085.20

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Solution

The fourth proportional to 29,602.80, 44,420.40 and 12,085.20 is: 18,134.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,602.80 : 44,420.40 = 12,085.20 : x
  2. Step 2: Convert to fraction form
    29,602.80/44,420.40 = 12,085.20/x
  3. Step 3: Cross multiply
    29,602.80x = 44,420.40 × 12,085.20
  4. Step 4: Simplify right side
    29,602.80x = 536,829,418.08
  5. Step 5: Solve for x
    x = 536,829,418.08/29,602.80
  6. Step 6: Final answer
    x = 18,134.41

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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.