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Finding the Fourth Proportional to 64,840.81, 89,478.53 and 36,161.34

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Solution

The fourth proportional to 64,840.81, 89,478.53 and 36,161.34 is: 49,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.81 : 89,478.53 = 36,161.34 : x
  2. Step 2: Convert to fraction form
    64,840.81/89,478.53 = 36,161.34/x
  3. Step 3: Cross multiply
    64,840.81x = 89,478.53 × 36,161.34
  4. Step 4: Simplify right side
    64,840.81x = 3,235,663,546.03
  5. Step 5: Solve for x
    x = 3,235,663,546.03/64,840.81
  6. Step 6: Final answer
    x = 49,901.66

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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.