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Finding the Fourth Proportional to 358,735.21, 538,133.76 and 92,493.47

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Solution

The fourth proportional to 358,735.21, 538,133.76 and 92,493.47 is: 138,748.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,735.21 : 538,133.76 = 92,493.47 : x
  2. Step 2: Convert to fraction form
    358,735.21/538,133.76 = 92,493.47/x
  3. Step 3: Cross multiply
    358,735.21x = 538,133.76 × 92,493.47
  4. Step 4: Simplify right side
    358,735.21x = 49,773,860,131.88
  5. Step 5: Solve for x
    x = 49,773,860,131.88/358,735.21
  6. Step 6: Final answer
    x = 138,748.19

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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.