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Finding the Fourth Proportional to 53,232.60, 79,848.80 and 21,659.81

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Solution

The fourth proportional to 53,232.60, 79,848.80 and 21,659.81 is: 32,489.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,232.60 : 79,848.80 = 21,659.81 : x
  2. Step 2: Convert to fraction form
    53,232.60/79,848.80 = 21,659.81/x
  3. Step 3: Cross multiply
    53,232.60x = 79,848.80 × 21,659.81
  4. Step 4: Simplify right side
    53,232.60x = 1,729,509,728.43
  5. Step 5: Solve for x
    x = 1,729,509,728.43/53,232.60
  6. Step 6: Final answer
    x = 32,489.67

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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.