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Finding the Fourth Proportional to 79,955.50, 110,348.31 and 46,421.50

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Solution

The fourth proportional to 79,955.50, 110,348.31 and 46,421.50 is: 64,067.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,955.50 : 110,348.31 = 46,421.50 : x
  2. Step 2: Convert to fraction form
    79,955.50/110,348.31 = 46,421.50/x
  3. Step 3: Cross multiply
    79,955.50x = 110,348.31 × 46,421.50
  4. Step 4: Simplify right side
    79,955.50x = 5,122,534,072.67
  5. Step 5: Solve for x
    x = 5,122,534,072.67/79,955.50
  6. Step 6: Final answer
    x = 64,067.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.