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Finding the Fourth Proportional to 86,163.74, 118,903.88 and 46,871.72

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Solution

The fourth proportional to 86,163.74, 118,903.88 and 46,871.72 is: 64,681.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,163.74 : 118,903.88 = 46,871.72 : x
  2. Step 2: Convert to fraction form
    86,163.74/118,903.88 = 46,871.72/x
  3. Step 3: Cross multiply
    86,163.74x = 118,903.88 × 46,871.72
  4. Step 4: Simplify right side
    86,163.74x = 5,573,229,370.27
  5. Step 5: Solve for x
    x = 5,573,229,370.27/86,163.74
  6. Step 6: Final answer
    x = 64,681.84

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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.