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Finding the Fourth Proportional to 245,858.72, 339,295.49 and 136,962.93

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Solution

The fourth proportional to 245,858.72, 339,295.49 and 136,962.93 is: 189,014.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,858.72 : 339,295.49 = 136,962.93 : x
  2. Step 2: Convert to fraction form
    245,858.72/339,295.49 = 136,962.93/x
  3. Step 3: Cross multiply
    245,858.72x = 339,295.49 × 136,962.93
  4. Step 4: Simplify right side
    245,858.72x = 46,470,904,446.19
  5. Step 5: Solve for x
    x = 46,470,904,446.19/245,858.72
  6. Step 6: Final answer
    x = 189,014.67

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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.