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Finding the Fourth Proportional to 355,748.96, 533,371.80 and 178,128.56

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Solution

The fourth proportional to 355,748.96, 533,371.80 and 178,128.56 is: 267,066.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,748.96 : 533,371.80 = 178,128.56 : x
  2. Step 2: Convert to fraction form
    355,748.96/533,371.80 = 178,128.56/x
  3. Step 3: Cross multiply
    355,748.96x = 533,371.80 × 178,128.56
  4. Step 4: Simplify right side
    355,748.96x = 95,008,750,678.61
  5. Step 5: Solve for x
    x = 95,008,750,678.61/355,748.96
  6. Step 6: Final answer
    x = 267,066.84

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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.