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Finding the Fourth Proportional to 355,419.76, 533,157.21 and 118,763.27

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Solution

The fourth proportional to 355,419.76, 533,157.21 and 118,763.27 is: 178,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,419.76 : 533,157.21 = 118,763.27 : x
  2. Step 2: Convert to fraction form
    355,419.76/533,157.21 = 118,763.27/x
  3. Step 3: Cross multiply
    355,419.76x = 533,157.21 × 118,763.27
  4. Step 4: Simplify right side
    355,419.76x = 63,319,493,089.86
  5. Step 5: Solve for x
    x = 63,319,493,089.86/355,419.76
  6. Step 6: Final answer
    x = 178,154.12

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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.