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Finding the Fourth Proportional to 74,491.40, 104,426.20 and 74,491.40

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Solution

The fourth proportional to 74,491.40, 104,426.20 and 74,491.40 is: 104,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,491.40 : 104,426.20 = 74,491.40 : x
  2. Step 2: Convert to fraction form
    74,491.40/104,426.20 = 74,491.40/x
  3. Step 3: Cross multiply
    74,491.40x = 104,426.20 × 74,491.40
  4. Step 4: Simplify right side
    74,491.40x = 7,778,853,834.68
  5. Step 5: Solve for x
    x = 7,778,853,834.68/74,491.40
  6. Step 6: Final answer
    x = 104,426.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.