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Finding the Fourth Proportional to 115,673.63, 173,431.40 and 61,646.47

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Solution

The fourth proportional to 115,673.63, 173,431.40 and 61,646.47 is: 92,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,673.63 : 173,431.40 = 61,646.47 : x
  2. Step 2: Convert to fraction form
    115,673.63/173,431.40 = 61,646.47/x
  3. Step 3: Cross multiply
    115,673.63x = 173,431.40 × 61,646.47
  4. Step 4: Simplify right side
    115,673.63x = 10,691,432,855.35
  5. Step 5: Solve for x
    x = 10,691,432,855.35/115,673.63
  6. Step 6: Final answer
    x = 92,427.58

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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.