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Finding the Fourth Proportional to 12,458.66, 18,673.64 and 5,055.01

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Solution

The fourth proportional to 12,458.66, 18,673.64 and 5,055.01 is: 7,576.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.66 : 18,673.64 = 5,055.01 : x
  2. Step 2: Convert to fraction form
    12,458.66/18,673.64 = 5,055.01/x
  3. Step 3: Cross multiply
    12,458.66x = 18,673.64 × 5,055.01
  4. Step 4: Simplify right side
    12,458.66x = 94,395,383.93
  5. Step 5: Solve for x
    x = 94,395,383.93/12,458.66
  6. Step 6: Final answer
    x = 7,576.69

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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.