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Finding the Fourth Proportional to 118,973.58, 178,109.76 and 104,211.33

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Solution

The fourth proportional to 118,973.58, 178,109.76 and 104,211.33 is: 156,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,973.58 : 178,109.76 = 104,211.33 : x
  2. Step 2: Convert to fraction form
    118,973.58/178,109.76 = 104,211.33/x
  3. Step 3: Cross multiply
    118,973.58x = 178,109.76 × 104,211.33
  4. Step 4: Simplify right side
    118,973.58x = 18,561,054,085.03
  5. Step 5: Solve for x
    x = 18,561,054,085.03/118,973.58
  6. Step 6: Final answer
    x = 156,009.89

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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.