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Finding the Fourth Proportional to 10,654.46, 15,990.06 and 7,390.52

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Solution

The fourth proportional to 10,654.46, 15,990.06 and 7,390.52 is: 11,091.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,654.46 : 15,990.06 = 7,390.52 : x
  2. Step 2: Convert to fraction form
    10,654.46/15,990.06 = 7,390.52/x
  3. Step 3: Cross multiply
    10,654.46x = 15,990.06 × 7,390.52
  4. Step 4: Simplify right side
    10,654.46x = 118,174,858.23
  5. Step 5: Solve for x
    x = 118,174,858.23/10,654.46
  6. Step 6: Final answer
    x = 11,091.59

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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.