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Finding the Fourth Proportional to 210,741.69, 316,278.60 and 92,494.65

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Solution

The fourth proportional to 210,741.69, 316,278.60 and 92,494.65 is: 138,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,741.69 : 316,278.60 = 92,494.65 : x
  2. Step 2: Convert to fraction form
    210,741.69/316,278.60 = 92,494.65/x
  3. Step 3: Cross multiply
    210,741.69x = 316,278.60 × 92,494.65
  4. Step 4: Simplify right side
    210,741.69x = 29,254,078,409.49
  5. Step 5: Solve for x
    x = 29,254,078,409.49/210,741.69
  6. Step 6: Final answer
    x = 138,814.86

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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.