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Finding the Fourth Proportional to 74,973.20, 112,459.80 and 73,677.20

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Solution

The fourth proportional to 74,973.20, 112,459.80 and 73,677.20 is: 110,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,973.20 : 112,459.80 = 73,677.20 : x
  2. Step 2: Convert to fraction form
    74,973.20/112,459.80 = 73,677.20/x
  3. Step 3: Cross multiply
    74,973.20x = 112,459.80 × 73,677.20
  4. Step 4: Simplify right side
    74,973.20x = 8,285,723,176.56
  5. Step 5: Solve for x
    x = 8,285,723,176.56/74,973.20
  6. Step 6: Final answer
    x = 110,515.80

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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.