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Finding the Fourth Proportional to 170,447.60, 255,622.80 and 52,090.40

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Solution

The fourth proportional to 170,447.60, 255,622.80 and 52,090.40 is: 78,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,447.60 : 255,622.80 = 52,090.40 : x
  2. Step 2: Convert to fraction form
    170,447.60/255,622.80 = 52,090.40/x
  3. Step 3: Cross multiply
    170,447.60x = 255,622.80 × 52,090.40
  4. Step 4: Simplify right side
    170,447.60x = 13,315,493,901.12
  5. Step 5: Solve for x
    x = 13,315,493,901.12/170,447.60
  6. Step 6: Final answer
    x = 78,120.75

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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.