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Finding the Fourth Proportional to 64,945.41, 89,591.64 and 39,444.99

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Solution

The fourth proportional to 64,945.41, 89,591.64 and 39,444.99 is: 54,414.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,945.41 : 89,591.64 = 39,444.99 : x
  2. Step 2: Convert to fraction form
    64,945.41/89,591.64 = 39,444.99/x
  3. Step 3: Cross multiply
    64,945.41x = 89,591.64 × 39,444.99
  4. Step 4: Simplify right side
    64,945.41x = 3,533,941,343.88
  5. Step 5: Solve for x
    x = 3,533,941,343.88/64,945.41
  6. Step 6: Final answer
    x = 54,414.03

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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.