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Finding the Fourth Proportional to 13,607.58, 20,415.09 and 4,843.38

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Solution

The fourth proportional to 13,607.58, 20,415.09 and 4,843.38 is: 7,266.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.58 : 20,415.09 = 4,843.38 : x
  2. Step 2: Convert to fraction form
    13,607.58/20,415.09 = 4,843.38/x
  3. Step 3: Cross multiply
    13,607.58x = 20,415.09 × 4,843.38
  4. Step 4: Simplify right side
    13,607.58x = 98,878,038.60
  5. Step 5: Solve for x
    x = 98,878,038.60/13,607.58
  6. Step 6: Final answer
    x = 7,266.39

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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.