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Finding the Fourth Proportional to 43,978.51, 65,967.22 and 10,698.58

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Solution

The fourth proportional to 43,978.51, 65,967.22 and 10,698.58 is: 16,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,978.51 : 65,967.22 = 10,698.58 : x
  2. Step 2: Convert to fraction form
    43,978.51/65,967.22 = 10,698.58/x
  3. Step 3: Cross multiply
    43,978.51x = 65,967.22 × 10,698.58
  4. Step 4: Simplify right side
    43,978.51x = 705,755,580.55
  5. Step 5: Solve for x
    x = 705,755,580.55/43,978.51
  6. Step 6: Final answer
    x = 16,047.74

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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.