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Finding the Fourth Proportional to 355,415.75, 533,151.17 and 118,759.27

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Solution

The fourth proportional to 355,415.75, 533,151.17 and 118,759.27 is: 178,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,415.75 : 533,151.17 = 118,759.27 : x
  2. Step 2: Convert to fraction form
    355,415.75/533,151.17 = 118,759.27/x
  3. Step 3: Cross multiply
    355,415.75x = 533,151.17 × 118,759.27
  4. Step 4: Simplify right side
    355,415.75x = 63,316,642,267.52
  5. Step 5: Solve for x
    x = 63,316,642,267.52/355,415.75
  6. Step 6: Final answer
    x = 178,148.10

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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.