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Finding the Fourth Proportional to 358,728.93, 538,169.30 and 118,829.25

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Solution

The fourth proportional to 358,728.93, 538,169.30 and 118,829.25 is: 178,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,728.93 : 538,169.30 = 118,829.25 : x
  2. Step 2: Convert to fraction form
    358,728.93/538,169.30 = 118,829.25/x
  3. Step 3: Cross multiply
    358,728.93x = 538,169.30 × 118,829.25
  4. Step 4: Simplify right side
    358,728.93x = 63,950,253,697.88
  5. Step 5: Solve for x
    x = 63,950,253,697.88/358,728.93
  6. Step 6: Final answer
    x = 178,269.02

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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.