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Finding the Fourth Proportional to 43,857.60, 65,787.02 and 14,275.59

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Solution

The fourth proportional to 43,857.60, 65,787.02 and 14,275.59 is: 21,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,857.60 : 65,787.02 = 14,275.59 : x
  2. Step 2: Convert to fraction form
    43,857.60/65,787.02 = 14,275.59/x
  3. Step 3: Cross multiply
    43,857.60x = 65,787.02 × 14,275.59
  4. Step 4: Simplify right side
    43,857.60x = 939,148,453.46
  5. Step 5: Solve for x
    x = 939,148,453.46/43,857.60
  6. Step 6: Final answer
    x = 21,413.59

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1.5x scale

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.