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Finding the Fourth Proportional to 12,877.28, 19,200.58 and 12,644

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Solution

The fourth proportional to 12,877.28, 19,200.58 and 12,644 is: 18,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.28 : 19,200.58 = 12,644 : x
  2. Step 2: Convert to fraction form
    12,877.28/19,200.58 = 12,644/x
  3. Step 3: Cross multiply
    12,877.28x = 19,200.58 × 12,644
  4. Step 4: Simplify right side
    12,877.28x = 242,772,133.52
  5. Step 5: Solve for x
    x = 242,772,133.52/12,877.28
  6. Step 6: Final answer
    x = 18,852.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.