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Finding the Fourth Proportional to 118,713.85, 163,840.77 and 67,714.90

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Solution

The fourth proportional to 118,713.85, 163,840.77 and 67,714.90 is: 93,455.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.85 : 163,840.77 = 67,714.90 : x
  2. Step 2: Convert to fraction form
    118,713.85/163,840.77 = 67,714.90/x
  3. Step 3: Cross multiply
    118,713.85x = 163,840.77 × 67,714.90
  4. Step 4: Simplify right side
    118,713.85x = 11,094,460,946.87
  5. Step 5: Solve for x
    x = 11,094,460,946.87/118,713.85
  6. Step 6: Final answer
    x = 93,455.49

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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.