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Finding the Fourth Proportional to 64,969.80, 89,657.46 and 36,676.05

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Solution

The fourth proportional to 64,969.80, 89,657.46 and 36,676.05 is: 50,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.80 : 89,657.46 = 36,676.05 : x
  2. Step 2: Convert to fraction form
    64,969.80/89,657.46 = 36,676.05/x
  3. Step 3: Cross multiply
    64,969.80x = 89,657.46 × 36,676.05
  4. Step 4: Simplify right side
    64,969.80x = 3,288,281,485.83
  5. Step 5: Solve for x
    x = 3,288,281,485.83/64,969.80
  6. Step 6: Final answer
    x = 50,612.46

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1.5x scale

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.