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Finding the Fourth Proportional to 355,421.37, 533,159.61 and 118,764.90

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Solution

The fourth proportional to 355,421.37, 533,159.61 and 118,764.90 is: 178,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,421.37 : 533,159.61 = 118,764.90 : x
  2. Step 2: Convert to fraction form
    355,421.37/533,159.61 = 118,764.90/x
  3. Step 3: Cross multiply
    355,421.37x = 533,159.61 × 118,764.90
  4. Step 4: Simplify right side
    355,421.37x = 63,320,647,765.69
  5. Step 5: Solve for x
    x = 63,320,647,765.69/355,421.37
  6. Step 6: Final answer
    x = 178,156.56

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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.