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Finding the Fourth Proportional to 14,133.89, 19,505.12 and 7,761.11

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Solution

The fourth proportional to 14,133.89, 19,505.12 and 7,761.11 is: 10,710.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,133.89 : 19,505.12 = 7,761.11 : x
  2. Step 2: Convert to fraction form
    14,133.89/19,505.12 = 7,761.11/x
  3. Step 3: Cross multiply
    14,133.89x = 19,505.12 × 7,761.11
  4. Step 4: Simplify right side
    14,133.89x = 151,381,245.55
  5. Step 5: Solve for x
    x = 151,381,245.55/14,133.89
  6. Step 6: Final answer
    x = 10,710.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.