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Finding the Fourth Proportional to 32,488.63, 44,820.75 and 21,859.81

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Solution

The fourth proportional to 32,488.63, 44,820.75 and 21,859.81 is: 30,157.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,488.63 : 44,820.75 = 21,859.81 : x
  2. Step 2: Convert to fraction form
    32,488.63/44,820.75 = 21,859.81/x
  3. Step 3: Cross multiply
    32,488.63x = 44,820.75 × 21,859.81
  4. Step 4: Simplify right side
    32,488.63x = 979,773,079.06
  5. Step 5: Solve for x
    x = 979,773,079.06/32,488.63
  6. Step 6: Final answer
    x = 30,157.41

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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.