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Finding the Fourth Proportional to 118,766.76, 163,898.13 and 65,051.91

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Solution

The fourth proportional to 118,766.76, 163,898.13 and 65,051.91 is: 89,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,766.76 : 163,898.13 = 65,051.91 : x
  2. Step 2: Convert to fraction form
    118,766.76/163,898.13 = 65,051.91/x
  3. Step 3: Cross multiply
    118,766.76x = 163,898.13 × 65,051.91
  4. Step 4: Simplify right side
    118,766.76x = 10,661,886,645.87
  5. Step 5: Solve for x
    x = 10,661,886,645.87/118,766.76
  6. Step 6: Final answer
    x = 89,771.64

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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.