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Finding the Fourth Proportional to 118,465.01, 163,481.31 and 64,749.99

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Solution

The fourth proportional to 118,465.01, 163,481.31 and 64,749.99 is: 89,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,465.01 : 163,481.31 = 64,749.99 : x
  2. Step 2: Convert to fraction form
    118,465.01/163,481.31 = 64,749.99/x
  3. Step 3: Cross multiply
    118,465.01x = 163,481.31 × 64,749.99
  4. Step 4: Simplify right side
    118,465.01x = 10,585,413,187.69
  5. Step 5: Solve for x
    x = 10,585,413,187.69/118,465.01
  6. Step 6: Final answer
    x = 89,354.77

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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.