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Finding the Fourth Proportional to 43,862.80, 65,602.20 and 39,216.40

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Solution

The fourth proportional to 43,862.80, 65,602.20 and 39,216.40 is: 58,652.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,862.80 : 65,602.20 = 39,216.40 : x
  2. Step 2: Convert to fraction form
    43,862.80/65,602.20 = 39,216.40/x
  3. Step 3: Cross multiply
    43,862.80x = 65,602.20 × 39,216.40
  4. Step 4: Simplify right side
    43,862.80x = 2,572,682,116.08
  5. Step 5: Solve for x
    x = 2,572,682,116.08/43,862.80
  6. Step 6: Final answer
    x = 58,652.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.