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Finding the Fourth Proportional to 86,893.70, 119,903.39 and 48,647.93

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Solution

The fourth proportional to 86,893.70, 119,903.39 and 48,647.93 is: 67,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,893.70 : 119,903.39 = 48,647.93 : x
  2. Step 2: Convert to fraction form
    86,893.70/119,903.39 = 48,647.93/x
  3. Step 3: Cross multiply
    86,893.70x = 119,903.39 × 48,647.93
  4. Step 4: Simplify right side
    86,893.70x = 5,833,050,941.54
  5. Step 5: Solve for x
    x = 5,833,050,941.54/86,893.70
  6. Step 6: Final answer
    x = 67,128.59

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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.