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Finding the Fourth Proportional to 210,863.82, 316,260.42 and 92,503.38

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Solution

The fourth proportional to 210,863.82, 316,260.42 and 92,503.38 is: 138,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,863.82 : 316,260.42 = 92,503.38 : x
  2. Step 2: Convert to fraction form
    210,863.82/316,260.42 = 92,503.38/x
  3. Step 3: Cross multiply
    210,863.82x = 316,260.42 × 92,503.38
  4. Step 4: Simplify right side
    210,863.82x = 29,255,157,810.22
  5. Step 5: Solve for x
    x = 29,255,157,810.22/210,863.82
  6. Step 6: Final answer
    x = 138,739.58

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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.