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Finding the Fourth Proportional to 43,957.44, 65,931.32 and 12,368.50

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Solution

The fourth proportional to 43,957.44, 65,931.32 and 12,368.50 is: 18,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,957.44 : 65,931.32 = 12,368.50 : x
  2. Step 2: Convert to fraction form
    43,957.44/65,931.32 = 12,368.50/x
  3. Step 3: Cross multiply
    43,957.44x = 65,931.32 × 12,368.50
  4. Step 4: Simplify right side
    43,957.44x = 815,471,531.42
  5. Step 5: Solve for x
    x = 815,471,531.42/43,957.44
  6. Step 6: Final answer
    x = 18,551.39

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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.