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Finding the Fourth Proportional to 118,782.98, 163,923.15 and 67,794.68

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Solution

The fourth proportional to 118,782.98, 163,923.15 and 67,794.68 is: 93,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,782.98 : 163,923.15 = 67,794.68 : x
  2. Step 2: Convert to fraction form
    118,782.98/163,923.15 = 67,794.68/x
  3. Step 3: Cross multiply
    118,782.98x = 163,923.15 × 67,794.68
  4. Step 4: Simplify right side
    118,782.98x = 11,113,117,498.84
  5. Step 5: Solve for x
    x = 11,113,117,498.84/118,782.98
  6. Step 6: Final answer
    x = 93,558.16

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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.