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Finding the Fourth Proportional to 326,895.90, 490,246.65 and 127,101.30

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Solution

The fourth proportional to 326,895.90, 490,246.65 and 127,101.30 is: 190,614.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,895.90 : 490,246.65 = 127,101.30 : x
  2. Step 2: Convert to fraction form
    326,895.90/490,246.65 = 127,101.30/x
  3. Step 3: Cross multiply
    326,895.90x = 490,246.65 × 127,101.30
  4. Step 4: Simplify right side
    326,895.90x = 62,310,986,535.65
  5. Step 5: Solve for x
    x = 62,310,986,535.65/326,895.90
  6. Step 6: Final answer
    x = 190,614.16

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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.