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Finding the Fourth Proportional to 43,787.58, 65,690.60 and 14,203.11

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Solution

The fourth proportional to 43,787.58, 65,690.60 and 14,203.11 is: 21,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,787.58 : 65,690.60 = 14,203.11 : x
  2. Step 2: Convert to fraction form
    43,787.58/65,690.60 = 14,203.11/x
  3. Step 3: Cross multiply
    43,787.58x = 65,690.60 × 14,203.11
  4. Step 4: Simplify right side
    43,787.58x = 933,010,577.39
  5. Step 5: Solve for x
    x = 933,010,577.39/43,787.58
  6. Step 6: Final answer
    x = 21,307.65

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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.