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Finding the Fourth Proportional to 442,828.40, 664,242.60 and 127,266.80

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Solution

The fourth proportional to 442,828.40, 664,242.60 and 127,266.80 is: 190,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,828.40 : 664,242.60 = 127,266.80 : x
  2. Step 2: Convert to fraction form
    442,828.40/664,242.60 = 127,266.80/x
  3. Step 3: Cross multiply
    442,828.40x = 664,242.60 × 127,266.80
  4. Step 4: Simplify right side
    442,828.40x = 84,536,030,125.68
  5. Step 5: Solve for x
    x = 84,536,030,125.68/442,828.40
  6. Step 6: Final answer
    x = 190,900.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.