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Finding the Fourth Proportional to 313,805.34, 470,559.78 and 113,986.44

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Solution

The fourth proportional to 313,805.34, 470,559.78 and 113,986.44 is: 170,925.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,805.34 : 470,559.78 = 113,986.44 : x
  2. Step 2: Convert to fraction form
    313,805.34/470,559.78 = 113,986.44/x
  3. Step 3: Cross multiply
    313,805.34x = 470,559.78 × 113,986.44
  4. Step 4: Simplify right side
    313,805.34x = 53,637,434,129.38
  5. Step 5: Solve for x
    x = 53,637,434,129.38/313,805.34
  6. Step 6: Final answer
    x = 170,925.82

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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.