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Finding the Fourth Proportional to 211,036.35, 316,570.92 and 61,279.11

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Solution

The fourth proportional to 211,036.35, 316,570.92 and 61,279.11 is: 91,923.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,036.35 : 316,570.92 = 61,279.11 : x
  2. Step 2: Convert to fraction form
    211,036.35/316,570.92 = 61,279.11/x
  3. Step 3: Cross multiply
    211,036.35x = 316,570.92 × 61,279.11
  4. Step 4: Simplify right side
    211,036.35x = 19,399,184,229.48
  5. Step 5: Solve for x
    x = 19,399,184,229.48/211,036.35
  6. Step 6: Final answer
    x = 91,923.43

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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.