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Finding the Fourth Proportional to 118,675.36, 163,770.70 and 67,686.77

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Solution

The fourth proportional to 118,675.36, 163,770.70 and 67,686.77 is: 93,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,675.36 : 163,770.70 = 67,686.77 : x
  2. Step 2: Convert to fraction form
    118,675.36/163,770.70 = 67,686.77/x
  3. Step 3: Cross multiply
    118,675.36x = 163,770.70 × 67,686.77
  4. Step 4: Simplify right side
    118,675.36x = 11,085,109,703.64
  5. Step 5: Solve for x
    x = 11,085,109,703.64/118,675.36
  6. Step 6: Final answer
    x = 93,407.00

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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.