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Finding the Fourth Proportional to 219,398, 329,098.92 and 53,186

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Solution

The fourth proportional to 219,398, 329,098.92 and 53,186 is: 79,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,398 : 329,098.92 = 53,186 : x
  2. Step 2: Convert to fraction form
    219,398/329,098.92 = 53,186/x
  3. Step 3: Cross multiply
    219,398x = 329,098.92 × 53,186
  4. Step 4: Simplify right side
    219,398x = 17,503,455,159.12
  5. Step 5: Solve for x
    x = 17,503,455,159.12/219,398
  6. Step 6: Final answer
    x = 79,779.47

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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.