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Finding the Fourth Proportional to 79,492.61, 109,699.79 and 43,684.94

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Solution

The fourth proportional to 79,492.61, 109,699.79 and 43,684.94 is: 60,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.61 : 109,699.79 = 43,684.94 : x
  2. Step 2: Convert to fraction form
    79,492.61/109,699.79 = 43,684.94/x
  3. Step 3: Cross multiply
    79,492.61x = 109,699.79 × 43,684.94
  4. Step 4: Simplify right side
    79,492.61x = 4,792,228,799.99
  5. Step 5: Solve for x
    x = 4,792,228,799.99/79,492.61
  6. Step 6: Final answer
    x = 60,285.21

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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.