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Finding the Fourth Proportional to 62,405.60, 93,608.40 and 20,852.60

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Solution

The fourth proportional to 62,405.60, 93,608.40 and 20,852.60 is: 31,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,405.60 : 93,608.40 = 20,852.60 : x
  2. Step 2: Convert to fraction form
    62,405.60/93,608.40 = 20,852.60/x
  3. Step 3: Cross multiply
    62,405.60x = 93,608.40 × 20,852.60
  4. Step 4: Simplify right side
    62,405.60x = 1,951,978,521.84
  5. Step 5: Solve for x
    x = 1,951,978,521.84/62,405.60
  6. Step 6: Final answer
    x = 31,278.90

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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.