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Finding the Fourth Proportional to 174,771.40, 261,638.70 and 115,673.80

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Solution

The fourth proportional to 174,771.40, 261,638.70 and 115,673.80 is: 173,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,771.40 : 261,638.70 = 115,673.80 : x
  2. Step 2: Convert to fraction form
    174,771.40/261,638.70 = 115,673.80/x
  3. Step 3: Cross multiply
    174,771.40x = 261,638.70 × 115,673.80
  4. Step 4: Simplify right side
    174,771.40x = 30,264,742,656.06
  5. Step 5: Solve for x
    x = 30,264,742,656.06/174,771.40
  6. Step 6: Final answer
    x = 173,167.59

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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.