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Finding the Fourth Proportional to 172,256.72, 237,712.20 and 96,818

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Solution

The fourth proportional to 172,256.72, 237,712.20 and 96,818 is: 133,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,256.72 : 237,712.20 = 96,818 : x
  2. Step 2: Convert to fraction form
    172,256.72/237,712.20 = 96,818/x
  3. Step 3: Cross multiply
    172,256.72x = 237,712.20 × 96,818
  4. Step 4: Simplify right side
    172,256.72x = 23,014,819,779.60
  5. Step 5: Solve for x
    x = 23,014,819,779.60/172,256.72
  6. Step 6: Final answer
    x = 133,607.67

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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.