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Finding the Fourth Proportional to 355,438.44, 533,157.66 and 118,781.11

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Solution

The fourth proportional to 355,438.44, 533,157.66 and 118,781.11 is: 178,171.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,438.44 : 533,157.66 = 118,781.11 : x
  2. Step 2: Convert to fraction form
    355,438.44/533,157.66 = 118,781.11/x
  3. Step 3: Cross multiply
    355,438.44x = 533,157.66 × 118,781.11
  4. Step 4: Simplify right side
    355,438.44x = 63,329,058,659.80
  5. Step 5: Solve for x
    x = 63,329,058,659.80/355,438.44
  6. Step 6: Final answer
    x = 178,171.67

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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.