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Finding the Fourth Proportional to 118,275.21, 163,195.43 and 67,964.49

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Solution

The fourth proportional to 118,275.21, 163,195.43 and 67,964.49 is: 93,777.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,275.21 : 163,195.43 = 67,964.49 : x
  2. Step 2: Convert to fraction form
    118,275.21/163,195.43 = 67,964.49/x
  3. Step 3: Cross multiply
    118,275.21x = 163,195.43 × 67,964.49
  4. Step 4: Simplify right side
    118,275.21x = 11,091,493,830.46
  5. Step 5: Solve for x
    x = 11,091,493,830.46/118,275.21
  6. Step 6: Final answer
    x = 93,777.00

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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.