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Finding the Fourth Proportional to 118,110.50, 176,968.51 and 82,987.28

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Solution

The fourth proportional to 118,110.50, 176,968.51 and 82,987.28 is: 124,342.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,110.50 : 176,968.51 = 82,987.28 : x
  2. Step 2: Convert to fraction form
    118,110.50/176,968.51 = 82,987.28/x
  3. Step 3: Cross multiply
    118,110.50x = 176,968.51 × 82,987.28
  4. Step 4: Simplify right side
    118,110.50x = 14,686,133,990.77
  5. Step 5: Solve for x
    x = 14,686,133,990.77/118,110.50
  6. Step 6: Final answer
    x = 124,342.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.