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Finding the Fourth Proportional to 44,425.76, 66,628.80 and 12,828.96

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Solution

The fourth proportional to 44,425.76, 66,628.80 and 12,828.96 is: 19,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,425.76 : 66,628.80 = 12,828.96 : x
  2. Step 2: Convert to fraction form
    44,425.76/66,628.80 = 12,828.96/x
  3. Step 3: Cross multiply
    44,425.76x = 66,628.80 × 12,828.96
  4. Step 4: Simplify right side
    44,425.76x = 854,778,210.05
  5. Step 5: Solve for x
    x = 854,778,210.05/44,425.76
  6. Step 6: Final answer
    x = 19,240.60

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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.