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Finding the Fourth Proportional to 57,303.63, 79,077.76 and 31,808.50

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Solution

The fourth proportional to 57,303.63, 79,077.76 and 31,808.50 is: 43,895.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,303.63 : 79,077.76 = 31,808.50 : x
  2. Step 2: Convert to fraction form
    57,303.63/79,077.76 = 31,808.50/x
  3. Step 3: Cross multiply
    57,303.63x = 79,077.76 × 31,808.50
  4. Step 4: Simplify right side
    57,303.63x = 2,515,344,651.74
  5. Step 5: Solve for x
    x = 2,515,344,651.74/57,303.63
  6. Step 6: Final answer
    x = 43,895.03

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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.