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Finding the Fourth Proportional to 74,110.40, 111,116.40 and 40,846.40

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Solution

The fourth proportional to 74,110.40, 111,116.40 and 40,846.40 is: 61,242.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,110.40 : 111,116.40 = 40,846.40 : x
  2. Step 2: Convert to fraction form
    74,110.40/111,116.40 = 40,846.40/x
  3. Step 3: Cross multiply
    74,110.40x = 111,116.40 × 40,846.40
  4. Step 4: Simplify right side
    74,110.40x = 4,538,704,920.96
  5. Step 5: Solve for x
    x = 4,538,704,920.96/74,110.40
  6. Step 6: Final answer
    x = 61,242.48

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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.