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Finding the Fourth Proportional to 18,340.63, 27,489.65 and 7,807.32

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Solution

The fourth proportional to 18,340.63, 27,489.65 and 7,807.32 is: 11,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.63 : 27,489.65 = 7,807.32 : x
  2. Step 2: Convert to fraction form
    18,340.63/27,489.65 = 7,807.32/x
  3. Step 3: Cross multiply
    18,340.63x = 27,489.65 × 7,807.32
  4. Step 4: Simplify right side
    18,340.63x = 214,620,455.20
  5. Step 5: Solve for x
    x = 214,620,455.20/18,340.63
  6. Step 6: Final answer
    x = 11,701.91

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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.