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Finding the Fourth Proportional to 68,473.64, 94,484.94 and 40,169

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Solution

The fourth proportional to 68,473.64, 94,484.94 and 40,169 is: 55,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,473.64 : 94,484.94 = 40,169 : x
  2. Step 2: Convert to fraction form
    68,473.64/94,484.94 = 40,169/x
  3. Step 3: Cross multiply
    68,473.64x = 94,484.94 × 40,169
  4. Step 4: Simplify right side
    68,473.64x = 3,795,365,554.86
  5. Step 5: Solve for x
    x = 3,795,365,554.86/68,473.64
  6. Step 6: Final answer
    x = 55,428.13

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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.