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Finding the Fourth Proportional to 118,973.63, 178,530.11 and 47,885.20

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Solution

The fourth proportional to 118,973.63, 178,530.11 and 47,885.20 is: 71,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.63 : 178,530.11 = 47,885.20 : x
  2. Step 2: Convert to fraction form
    118,973.63/178,530.11 = 47,885.20/x
  3. Step 3: Cross multiply
    118,973.63x = 178,530.11 × 47,885.20
  4. Step 4: Simplify right side
    118,973.63x = 8,548,950,023.37
  5. Step 5: Solve for x
    x = 8,548,950,023.37/118,973.63
  6. Step 6: Final answer
    x = 71,855.84

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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.