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Finding the Fourth Proportional to 156,602.84, 216,112.48 and 84,982.84

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Solution

The fourth proportional to 156,602.84, 216,112.48 and 84,982.84 is: 117,276.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,602.84 : 216,112.48 = 84,982.84 : x
  2. Step 2: Convert to fraction form
    156,602.84/216,112.48 = 84,982.84/x
  3. Step 3: Cross multiply
    156,602.84x = 216,112.48 × 84,982.84
  4. Step 4: Simplify right side
    156,602.84x = 18,365,852,309.84
  5. Step 5: Solve for x
    x = 18,365,852,309.84/156,602.84
  6. Step 6: Final answer
    x = 117,276.63

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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.