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Finding the Fourth Proportional to 85,859.42, 118,485.92 and 48,133.68

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Solution

The fourth proportional to 85,859.42, 118,485.92 and 48,133.68 is: 66,424.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,859.42 : 118,485.92 = 48,133.68 : x
  2. Step 2: Convert to fraction form
    85,859.42/118,485.92 = 48,133.68/x
  3. Step 3: Cross multiply
    85,859.42x = 118,485.92 × 48,133.68
  4. Step 4: Simplify right side
    85,859.42x = 5,703,163,357.79
  5. Step 5: Solve for x
    x = 5,703,163,357.79/85,859.42
  6. Step 6: Final answer
    x = 66,424.43

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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.