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Finding the Fourth Proportional to 120,095.58, 165,740.51 and 66,379.46

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Solution

The fourth proportional to 120,095.58, 165,740.51 and 66,379.46 is: 91,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,095.58 : 165,740.51 = 66,379.46 : x
  2. Step 2: Convert to fraction form
    120,095.58/165,740.51 = 66,379.46/x
  3. Step 3: Cross multiply
    120,095.58x = 165,740.51 × 66,379.46
  4. Step 4: Simplify right side
    120,095.58x = 11,001,764,393.32
  5. Step 5: Solve for x
    x = 11,001,764,393.32/120,095.58
  6. Step 6: Final answer
    x = 91,608.40

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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.