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Finding the Fourth Proportional to 82,636.48, 113,914.34 and 64,700.34

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Solution

The fourth proportional to 82,636.48, 113,914.34 and 64,700.34 is: 89,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,636.48 : 113,914.34 = 64,700.34 : x
  2. Step 2: Convert to fraction form
    82,636.48/113,914.34 = 64,700.34/x
  3. Step 3: Cross multiply
    82,636.48x = 113,914.34 × 64,700.34
  4. Step 4: Simplify right side
    82,636.48x = 7,370,296,890.99
  5. Step 5: Solve for x
    x = 7,370,296,890.99/82,636.48
  6. Step 6: Final answer
    x = 89,189.39

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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.