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Finding the Fourth Proportional to 64,845.45, 89,484.90 and 36,165.98

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Solution

The fourth proportional to 64,845.45, 89,484.90 and 36,165.98 is: 49,908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,845.45 : 89,484.90 = 36,165.98 : x
  2. Step 2: Convert to fraction form
    64,845.45/89,484.90 = 36,165.98/x
  3. Step 3: Cross multiply
    64,845.45x = 89,484.90 × 36,165.98
  4. Step 4: Simplify right side
    64,845.45x = 3,236,308,656.28
  5. Step 5: Solve for x
    x = 3,236,308,656.28/64,845.45
  6. Step 6: Final answer
    x = 49,908.03

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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.