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Finding the Fourth Proportional to 57,665.72, 79,565.79 and 43,360.01

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Solution

The fourth proportional to 57,665.72, 79,565.79 and 43,360.01 is: 59,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.72 : 79,565.79 = 43,360.01 : x
  2. Step 2: Convert to fraction form
    57,665.72/79,565.79 = 43,360.01/x
  3. Step 3: Cross multiply
    57,665.72x = 79,565.79 × 43,360.01
  4. Step 4: Simplify right side
    57,665.72x = 3,449,973,513.20
  5. Step 5: Solve for x
    x = 3,449,973,513.20/57,665.72
  6. Step 6: Final answer
    x = 59,827.11

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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.