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Finding the Fourth Proportional to 118,849.40, 164,012.18 and 68,548.40

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Solution

The fourth proportional to 118,849.40, 164,012.18 and 68,548.40 is: 94,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,849.40 : 164,012.18 = 68,548.40 : x
  2. Step 2: Convert to fraction form
    118,849.40/164,012.18 = 68,548.40/x
  3. Step 3: Cross multiply
    118,849.40x = 164,012.18 × 68,548.40
  4. Step 4: Simplify right side
    118,849.40x = 11,242,772,519.51
  5. Step 5: Solve for x
    x = 11,242,772,519.51/118,849.40
  6. Step 6: Final answer
    x = 94,596.80

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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.