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Finding the Fourth Proportional to 29,653.40, 44,505.30 and 12,135.80

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Solution

The fourth proportional to 29,653.40, 44,505.30 and 12,135.80 is: 18,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,653.40 : 44,505.30 = 12,135.80 : x
  2. Step 2: Convert to fraction form
    29,653.40/44,505.30 = 12,135.80/x
  3. Step 3: Cross multiply
    29,653.40x = 44,505.30 × 12,135.80
  4. Step 4: Simplify right side
    29,653.40x = 540,107,419.74
  5. Step 5: Solve for x
    x = 540,107,419.74/29,653.40
  6. Step 6: Final answer
    x = 18,214.01

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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.