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Finding the Fourth Proportional to 10,666.60, 15,978.30 and 6,044.20

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Solution

The fourth proportional to 10,666.60, 15,978.30 and 6,044.20 is: 9,054.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.60 : 15,978.30 = 6,044.20 : x
  2. Step 2: Convert to fraction form
    10,666.60/15,978.30 = 6,044.20/x
  3. Step 3: Cross multiply
    10,666.60x = 15,978.30 × 6,044.20
  4. Step 4: Simplify right side
    10,666.60x = 96,576,040.86
  5. Step 5: Solve for x
    x = 96,576,040.86/10,666.60
  6. Step 6: Final answer
    x = 9,054.06

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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.