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Finding the Fourth Proportional to 355,415.88, 533,151.36 and 118,759.39

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Solution

The fourth proportional to 355,415.88, 533,151.36 and 118,759.39 is: 178,148.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,415.88 : 533,151.36 = 118,759.39 : x
  2. Step 2: Convert to fraction form
    355,415.88/533,151.36 = 118,759.39/x
  3. Step 3: Cross multiply
    355,415.88x = 533,151.36 × 118,759.39
  4. Step 4: Simplify right side
    355,415.88x = 63,316,731,327.25
  5. Step 5: Solve for x
    x = 63,316,731,327.25/355,415.88
  6. Step 6: Final answer
    x = 178,148.29

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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.