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Finding the Fourth Proportional to 136,779.60, 205,140.60 and 57,896.40

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Solution

The fourth proportional to 136,779.60, 205,140.60 and 57,896.40 is: 86,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,779.60 : 205,140.60 = 57,896.40 : x
  2. Step 2: Convert to fraction form
    136,779.60/205,140.60 = 57,896.40/x
  3. Step 3: Cross multiply
    136,779.60x = 205,140.60 × 57,896.40
  4. Step 4: Simplify right side
    136,779.60x = 11,876,902,233.84
  5. Step 5: Solve for x
    x = 11,876,902,233.84/136,779.60
  6. Step 6: Final answer
    x = 86,832.41

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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.