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Finding the Fourth Proportional to 326,672.34, 490,038.83 and 127,007.90

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Solution

The fourth proportional to 326,672.34, 490,038.83 and 127,007.90 is: 190,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,672.34 : 490,038.83 = 127,007.90 : x
  2. Step 2: Convert to fraction form
    326,672.34/490,038.83 = 127,007.90/x
  3. Step 3: Cross multiply
    326,672.34x = 490,038.83 × 127,007.90
  4. Step 4: Simplify right side
    326,672.34x = 62,238,799,631.52
  5. Step 5: Solve for x
    x = 62,238,799,631.52/326,672.34
  6. Step 6: Final answer
    x = 190,523.63

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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.