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Finding the Fourth Proportional to 393,326.96, 589,993.85 and 127,087.50

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Solution

The fourth proportional to 393,326.96, 589,993.85 and 127,087.50 is: 190,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,326.96 : 589,993.85 = 127,087.50 : x
  2. Step 2: Convert to fraction form
    393,326.96/589,993.85 = 127,087.50/x
  3. Step 3: Cross multiply
    393,326.96x = 589,993.85 × 127,087.50
  4. Step 4: Simplify right side
    393,326.96x = 74,980,842,776.44
  5. Step 5: Solve for x
    x = 74,980,842,776.44/393,326.96
  6. Step 6: Final answer
    x = 190,632.35

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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.