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Finding the Fourth Proportional to 57,698.63, 79,623.51 and 33,820.69

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Solution

The fourth proportional to 57,698.63, 79,623.51 and 33,820.69 is: 46,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,698.63 : 79,623.51 = 33,820.69 : x
  2. Step 2: Convert to fraction form
    57,698.63/79,623.51 = 33,820.69/x
  3. Step 3: Cross multiply
    57,698.63x = 79,623.51 × 33,820.69
  4. Step 4: Simplify right side
    57,698.63x = 2,692,921,871.83
  5. Step 5: Solve for x
    x = 2,692,921,871.83/57,698.63
  6. Step 6: Final answer
    x = 46,672.20

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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.