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Finding the Fourth Proportional to 171,047.60, 236,083.16 and 99,468.91

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Solution

The fourth proportional to 171,047.60, 236,083.16 and 99,468.91 is: 137,288.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,047.60 : 236,083.16 = 99,468.91 : x
  2. Step 2: Convert to fraction form
    171,047.60/236,083.16 = 99,468.91/x
  3. Step 3: Cross multiply
    171,047.60x = 236,083.16 × 99,468.91
  4. Step 4: Simplify right side
    171,047.60x = 23,482,934,578.82
  5. Step 5: Solve for x
    x = 23,482,934,578.82/171,047.60
  6. Step 6: Final answer
    x = 137,288.89

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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.