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Finding the Fourth Proportional to 326,575.92, 490,051.08 and 126,870.60

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Solution

The fourth proportional to 326,575.92, 490,051.08 and 126,870.60 is: 190,378.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,575.92 : 490,051.08 = 126,870.60 : x
  2. Step 2: Convert to fraction form
    326,575.92/490,051.08 = 126,870.60/x
  3. Step 3: Cross multiply
    326,575.92x = 490,051.08 × 126,870.60
  4. Step 4: Simplify right side
    326,575.92x = 62,173,074,550.25
  5. Step 5: Solve for x
    x = 62,173,074,550.25/326,575.92
  6. Step 6: Final answer
    x = 190,378.62

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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.