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Finding the Fourth Proportional to 318,656.40, 439,751.46 and 173,466.38

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Solution

The fourth proportional to 318,656.40, 439,751.46 and 173,466.38 is: 239,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,656.40 : 439,751.46 = 173,466.38 : x
  2. Step 2: Convert to fraction form
    318,656.40/439,751.46 = 173,466.38/x
  3. Step 3: Cross multiply
    318,656.40x = 439,751.46 × 173,466.38
  4. Step 4: Simplify right side
    318,656.40x = 76,282,093,865.91
  5. Step 5: Solve for x
    x = 76,282,093,865.91/318,656.40
  6. Step 6: Final answer
    x = 239,386.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.