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Finding the Fourth Proportional to 44,078.71, 66,118.07 and 12,913.96

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Solution

The fourth proportional to 44,078.71, 66,118.07 and 12,913.96 is: 19,370.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,078.71 : 66,118.07 = 12,913.96 : x
  2. Step 2: Convert to fraction form
    44,078.71/66,118.07 = 12,913.96/x
  3. Step 3: Cross multiply
    44,078.71x = 66,118.07 × 12,913.96
  4. Step 4: Simplify right side
    44,078.71x = 853,846,111.26
  5. Step 5: Solve for x
    x = 853,846,111.26/44,078.71
  6. Step 6: Final answer
    x = 19,370.94

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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.