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Finding the Fourth Proportional to 171,230.48, 236,356.40 and 99,670.64

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Solution

The fourth proportional to 171,230.48, 236,356.40 and 99,670.64 is: 137,579.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,230.48 : 236,356.40 = 99,670.64 : x
  2. Step 2: Convert to fraction form
    171,230.48/236,356.40 = 99,670.64/x
  3. Step 3: Cross multiply
    171,230.48x = 236,356.40 × 99,670.64
  4. Step 4: Simplify right side
    171,230.48x = 23,557,793,656.10
  5. Step 5: Solve for x
    x = 23,557,793,656.10/171,230.48
  6. Step 6: Final answer
    x = 137,579.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.