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Finding the Fourth Proportional to 120,059.01, 165,684.65 and 66,347.37

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Solution

The fourth proportional to 120,059.01, 165,684.65 and 66,347.37 is: 91,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,059.01 : 165,684.65 = 66,347.37 : x
  2. Step 2: Convert to fraction form
    120,059.01/165,684.65 = 66,347.37/x
  3. Step 3: Cross multiply
    120,059.01x = 165,684.65 × 66,347.37
  4. Step 4: Simplify right side
    120,059.01x = 10,992,740,445.13
  5. Step 5: Solve for x
    x = 10,992,740,445.13/120,059.01
  6. Step 6: Final answer
    x = 91,561.15

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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.