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Finding the Fourth Proportional to 12,359.52, 18,539.51 and 4,039.50

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Solution

The fourth proportional to 12,359.52, 18,539.51 and 4,039.50 is: 6,059.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.52 : 18,539.51 = 4,039.50 : x
  2. Step 2: Convert to fraction form
    12,359.52/18,539.51 = 4,039.50/x
  3. Step 3: Cross multiply
    12,359.52x = 18,539.51 × 4,039.50
  4. Step 4: Simplify right side
    12,359.52x = 74,890,399.97
  5. Step 5: Solve for x
    x = 74,890,399.97/12,359.52
  6. Step 6: Final answer
    x = 6,059.33

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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.