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Finding the Fourth Proportional to 62,405.80, 93,608.70 and 61,239.40

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Solution

The fourth proportional to 62,405.80, 93,608.70 and 61,239.40 is: 91,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,405.80 : 93,608.70 = 61,239.40 : x
  2. Step 2: Convert to fraction form
    62,405.80/93,608.70 = 61,239.40/x
  3. Step 3: Cross multiply
    62,405.80x = 93,608.70 × 61,239.40
  4. Step 4: Simplify right side
    62,405.80x = 5,732,540,622.78
  5. Step 5: Solve for x
    x = 5,732,540,622.78/62,405.80
  6. Step 6: Final answer
    x = 91,859.10

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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.