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Finding the Fourth Proportional to 118,973.94, 164,186.22 and 65,261.70

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Solution

The fourth proportional to 118,973.94, 164,186.22 and 65,261.70 is: 90,062.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.94 : 164,186.22 = 65,261.70 : x
  2. Step 2: Convert to fraction form
    118,973.94/164,186.22 = 65,261.70/x
  3. Step 3: Cross multiply
    118,973.94x = 164,186.22 × 65,261.70
  4. Step 4: Simplify right side
    118,973.94x = 10,715,071,833.77
  5. Step 5: Solve for x
    x = 10,715,071,833.77/118,973.94
  6. Step 6: Final answer
    x = 90,062.34

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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.