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Finding the Fourth Proportional to 211,203.54, 316,826.10 and 61,445.34

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Solution

The fourth proportional to 211,203.54, 316,826.10 and 61,445.34 is: 92,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,203.54 : 316,826.10 = 61,445.34 : x
  2. Step 2: Convert to fraction form
    211,203.54/316,826.10 = 61,445.34/x
  3. Step 3: Cross multiply
    211,203.54x = 316,826.10 × 61,445.34
  4. Step 4: Simplify right side
    211,203.54x = 19,467,487,435.37
  5. Step 5: Solve for x
    x = 19,467,487,435.37/211,203.54
  6. Step 6: Final answer
    x = 92,174.06

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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.