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Finding the Fourth Proportional to 172,455.65, 237,785.22 and 118,034.06

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Solution

The fourth proportional to 172,455.65, 237,785.22 and 118,034.06 is: 162,747.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,455.65 : 237,785.22 = 118,034.06 : x
  2. Step 2: Convert to fraction form
    172,455.65/237,785.22 = 118,034.06/x
  3. Step 3: Cross multiply
    172,455.65x = 237,785.22 × 118,034.06
  4. Step 4: Simplify right side
    172,455.65x = 28,066,753,735.67
  5. Step 5: Solve for x
    x = 28,066,753,735.67/172,455.65
  6. Step 6: Final answer
    x = 162,747.67

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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.