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Finding the Fourth Proportional to 117,477.77, 162,119.46 and 63,762.80

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Solution

The fourth proportional to 117,477.77, 162,119.46 and 63,762.80 is: 87,992.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,477.77 : 162,119.46 = 63,762.80 : x
  2. Step 2: Convert to fraction form
    117,477.77/162,119.46 = 63,762.80/x
  3. Step 3: Cross multiply
    117,477.77x = 162,119.46 × 63,762.80
  4. Step 4: Simplify right side
    117,477.77x = 10,337,189,893.49
  5. Step 5: Solve for x
    x = 10,337,189,893.49/117,477.77
  6. Step 6: Final answer
    x = 87,992.74

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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.